Actually that's not exactly correct. My front derailleur is fine, but the shifter broke into a couple of different pieces today and I can no longer change gears. There's no tension at all in the derailleur cable and my bike is stuck on the smallest of the three front cog wheels. Please, by the way forgive my terminology, I'm not exactly the mechanical type. I'm still able to ride the bike, but I'm peddling like a mad woman during my whole commute, and it takes much longer for me to get anywhere.

Is there any kind of quick and dirty fix for this problem? I need the bike for the next couple of days to get to and from work, so I wont be able to leave it in the shop until the end of the week. I live in a very flat area, so I generally only use two gears. One for windy days and one for still days.

I would really appreciate any input.