Thanks for the replies. I tried to post up last night, but couldn't make the connection.
As far as I can tell, the bike is set up stock as it came from Schwinn.
I have the following info:
Rear cogs: 24 and 13 teeth
Chainrings: Shimano "BIOSPACE" 42/52 Teeth
Rear: 7-speed,
Derailleurs: Shimano "SPORT LX"
Bottom bracket: Unsure, but I believe it's also a Shimano "SPORT LX"
I ride on both flat(distance) and steep terrain, so I would like to keep(poss. increase) my high gearing. Since I'm on a shoe-string budget, I need to replace as little as possible to make it feasable.
Thanks again
robbster