Thanks for the link.

I do aspire to become my own bike mechanic but I do not trust myself enough at this time to try to do this work myself.

If this happened on a weekend afternoon where I could pick up the part and spend hours working to make sure all was installed and tuned properly I might just use this as an opportunity for a crash course in installing and maintaining my drive train.

Alas, I do not want to spend my evening after work tonight hoping I can have a ridable bike for the morning only to possibly fail and have wasted what little time I get after work (also my girlfriend is staying over tonight....).

I really should attend one of these free bike maintenance workshops and get to learning this stuff.

Thanks again, I definitely need to spend some time on parktool and other sites just reading so I can begun to learn more.