sync problem

I sync some of my folders to a workgroup networt computer, the drive in the network system failed and my comuter keeps tring to sync. I disabled the syncing but then could not access the files (Quickbooks) of I reenable the syncing I get access back to the QB files.
I would like to get my computer syncing to the new networked computer and stop it from triing to sync to the old non-exsisting networed computer.

XP system

How are you "syncing" the files? Have you moved the QuickBooks files to a new location, and did you change the location that QuickBooks is using to look for them?