I seemed to have let my horses go a little too long without being ridden and I would like to teach them to lunge. Help please! TIA!

Find someone who has a round pen and start there. I put mine on a lunge line in the round pen because I don't want to get kicked (and my horses are gentle). You need to make sure they can work slow before you just get out in the middle of a pasture. Registered shows have lunge line classes for babies and to be honest they are quite comical. 

Longe'ing is a horse on a control line ... round pen is to teach horse  no fence . go where you want to .. 

Shorten your line to 15 ft and drive horse at the hip .. if horse wants to get ahead of you or pull away .. jerk him off balance and keep driving as if nothing had happened . the jerking one off balance makes them aware of face pressure and watching the longe' line slack or pressure instead of where they want to go ... you can increase the length of the line but keep them away from the round pen fence ...  If you have a fenced arena or haul other horses to one .. take this one with you for first outings ... in case it gets away from you .  keep the hip to head angle which gives you the control and anticipate horse to run straight away from you which is too late ...  set down hard and make him use a minimum of pressure on the line and aware that you are the boss .  Do not attempt to stay in the same circle during the learning cycle .. you keep the circle going even if you end up on the other end of the arena and as training is learned you can remain in the same spot .. 

I went to a Lynn Palm clinic many years ago and she had a great demonstration on working a horse on a lunge line. Many times she would let them run at large in an arena/round pen. Keep them moving w/ your lunge whip. Wear them out. Let them play. When they start looking at you and licking their lips, they are ready to start work and ready to listen to you.

Make a triange--the horse is the bottom line of the triangle, you are the top. Hold your arms out--one holding the lunge line, the other the lunge whip. If you want the horse to go more--move forward, move your body a little more behind the hip. If you want the horse, to go slower, move your body more towards the shoulder. Lynn liked the round rope type lunge line with a chain. If you need a little more control, put the chain over the horse's nose--like a stud chain, until they start listening to you. Use your voice. She would use voice commands--walk, trop, lope, whoa. If you want to go slower, say your command lower and slower. If you want to go faster, your voice command is higher in tone and faster. If you want them to stop, say whoa long and slow, put your hand up and say whoa and stand in front of them when you want them to stop. Always have them facing you when you stop. If they put their rear end towards you, spank their butt.

This is a brief overview (may have forgotten a few things) and it was several years ago, but I still use these methods today.  

I don't have a round pen but using these methods along with the corner of my arena gets the job done.

It's not super hard to teach them.  I start at the shoulder and ask for them to move forward, and then they figure out after not too long to keep going in a circle.  I've started with a regular lead rope or rein and then also have them on a line.   I had to teach mine out of necessity because I moved to where there's no round pen anymore. And I don't have lights. So on days like last night where I get home when it's basically dark, I feel better about lunging mine than riding a 3YO in the dark. 

This!!! I'm in the same exact position, although I do have a round pen, it's kinda small and makes me worry about their hocks.

I totaly agree with the round lunge line and adding a chain if they look fiesty! 

The skinny ribbon like lounge lines are hard for me to use and they tie in knots and get tangled easy.  I have a nice heavy round rope with a weighted rubber circle on the end that is very easy to untangle and keep the slack out of.  Start smaller at a walk and trot if they will let you.  Don't let the line out if they are wanting to take off, keep the circle small so they can't.  If you use a chain over the nose be careful pulling on it too hard, and if you get in to trouble I would let go.  You don't want them all wrapped up freaking out. 

Keep the nose tipped in while driving the hip forward.  Don't let them cut the circle off and take off straight if you can help it.  Circles take a while usually and they do all kinds of strange shapes.  When the nose gets turned out and they take off in a straight line, it's really hard to stop them.  That's why the chain is nice.  It takes very little pressure to keep the nose tipped in. 

Use a lunge whip.  It's just easier to keep the hip moving forward.  Just use it as an extension of your arm and only tap them on the butt if they aren't paying attention and moving forward.  Most horses are pretty respectful of a whip and just having one makes them move. I've tried chasing them around waving my arms or swinging the end of the rope and I look like and idiot and it makes me super tired!  Once they learn you probably won't need the whip. 

I would also try it with a normal leadrope before you get a long lungeline.  All that rope can be hard to manage at first. 

DON'T GET TIED UP IN IT! Watch out for it wrapping around your arms or legs.

I have to lunge all of my horses becuase I don't have a round pen.  Don't let them get too crazy playing and bucking if you can help it.  I have noticed the more I let them play, the less respect I have when I get on.  Make them listen while you are lunging. 

I have the heavy round one with the rubber deal too and i like it a lot!! 

Driving reins.

This. You explained it a lot better than me! HA!