First time poster with big trouble here - my daughter was using Word on the Windows side of our Mac OS X 10.5.5, and it just crashed - when I try and run the Avast anti-virus scanner, it runs for a minute or so, then shuts down. The internet won't connect on Windows, and we can't access any files. Of course, everything is fine with the Mac side. I can't get in touch with anyone I know to fix it and don't want to call anyone in the Yellow Pages because we've been ripped off by those types before. Any advice would be appreciated....Thanks, Melissa