I'm using PSCS3 w/ Windows XP. It's run fine for 6 months. Last week Bridge refused to open leaving me with a MS error report. Tried un & then reinstalling Bridge. Also system restore. Neither has helped. Can anyone offer a solution?

Try deleting your bridge preference file, there a how to on adobes site, bridge will build a new one when it opens.
It seems theres a few issues with bridge in CS3, theres a lot of similar problems about the net, theres a thread here as well. Wayne