You can only sync to one iTunes library/computer. However, you can manage manually music among multiple computers. See:
To change syncing computer you have to restore the iPod on the computer you want to use as the syncing computer.
BTW you posted in the iPod touch forum.
Sorry about posting in the wrong spot. I'm new here and I guess I didn't study up enough. I promise I'll get better.
Even though I screwed up I really appreciate you being gentle and not flaming me. I tried to remove all traces from the wrong place but I'm not sure if that's even possible.
Anyway...the good news is the answer you provided solved my problem.