I've been trying to remedy a missing MSVCR80.dll file for days. My modem is on the fritz now too and needs to be replaced so I can barely navigate the web for solutions. I've tried MacAfee virus scans to see if its malware or a virus, running PC Health Advisor, bought Reg Edit Pro (mistake! did nothing) and tried to update a C+ visual update, but nothing has worked. ITunes definitely won't open and some of the pre-installed Dell programs that I don't use aren't loading either. I'm running Windows 7 on a Dell XPS with an i5 quad core. Please help!