Question on gears

[kutz]

I'm having a heck of a time finding any info on this bike. It's a 21 Speed, Schwinn, Women's Jet Star, purchased at Target. The only number I can see is on the rear largest gear, it says "34T", can't see any of the other numbers, too small. The frame has model S5977WM, 1002JG for a date.

Gear info from booklet:
4.0 Pro rear shifters
Rear derailers - SRAM 9.0SL / 9.0 / 7.0 / 5.0 / 4.0 / 3.0 (1:1 actual ration)

MRX Pro rear shifters - rear derailers - Shimano (2:1 actual ratio)

MRX Prod Rapid Rise rear shifters - 2:1 actuation ratio

4.0 Pro/MRX fron shifters: front derailers SRAM & Shimano

I'm sure I just typed all that and it means diddly... thanks!