Thanks ladies for all of your help. It is so nice to get replies that are so useful. I just wanted to add one question. I do understand that I need to increase my cadence to a higher level, but I have a difficult time keeping the speed up because I have to reduce the resistance to get the rpms up to a reasonable level and one that is maintainable. I feel great cranking along at 18 mph, 80 rpms, on a nice flat surface. If I tried to increase the cadence at that resistance, it would be extremely difficult, and I would have to lower the gears. Then, I feel like my legs are moving too fast for the pedals - good thing my feet are clipped in!! Anyway, I plan on getting a trainer and some of the spinerval DVDs. It is already getting nasty here in northern Indiana. I just want to make sure that I am doing things right. I plan on doing some intervals soon - Higher rpms with lowere resistance for a period of time, then a rest period. Or, should I increase the resistance to a very tough level, lower rpms, but go for a short period of time and then rest, etc.....? Any help would be great.

"See in yourself, not the limits, but the stars..."