I have just closed an Excel 2003 spreadsheet and the firewall came up with a query to the effect that DWIN.EXE was trying to access Excel. Not knowing what this was and having never seen it before, I blocked it. I did a search of the net and saw one site which said that this file was dangerous.
I have done a search on the computer itself using Vista's search engine and it found nothing - curious for a program seeking access - or is it?
I have run Spyware Terminator and that found nothing.