HIIT For my treadmill

Can anyone suggest a beginner HIIT for my home treadmill??  I'm thinking ahead and trying to avoid having that dreaded 'plateau' and start some new training.

FYI, i've lost 60 lbs and am at 185 lbs.  I have a fair size bust so RUNNING isnt really for me.  I have tried jogging and can do it for short periods at a time.

Any ideas?
~H~

sure its easy, lets make 5 mph the min for sake of argument.  Find the max speed you can do without stumbling, or AKA sprinting moderately.  Start with 10 minutes one week, 15 another, 10 another 15 another, 20 another, 25 another and so on.  The key for HIIT is the be on a constant rollercoaster of ups and downs.

always do a 5 minute warmup job not counted towards your time...

you can do 90 sec intervals or 2 minute intervals, i started with 90 personalyl but find whats good for you, a minute is the minimium for max effect.

0-2 min moderate jog around 5.5 mph
2-4 min moderate sprint around 6.8 mph
4-6 job around 5.8
6-8 sprint around 7.2
8-10 jog around 5
10-12 sprint...

and so on, the key is to keep mixing it up, so your heart is all over the place, your body will go nuts and youll feel it.  theres no set way to do this, experiment and keep increasing intensities.

If you've never tried HIIT on a treadmill before I suggest starting out doing 1:1 intervals, meaning (for example) 2 minute jog period to a 2 minute running period. Usually there's a pre-programed interval option where you can set a "jog" speed and a "run" speed and the machine will alternate between the two automatically for you. Once you have this down, then try out what Snowfall recommends above. I did 1:1 for about two weeks just to get used to running on a treadmill (before hand I did intervals on the stair climber machine) but now my routine looks more like what snowfall86 mentions above.  Best of luck!

If running is difficult for you, try using the incline on your treadmill. Put it up as high as it goes (15 on most treadmills), and walk as fast as you can at that incline. Then bring down the incline, slow your speed and recover. You could also walk as fast as you can, then slow down and recover for the same amount of time. Incline and race/power walking are good alternatives if running isn't appropriate for you.