went to a friends house to see why he can't access https sites. Ran adware/spybot/AVG AV. Couldn't run windows update so did admin install of SP2. Installed Firefox 1.0.5.2 and it won't even open in safemode (doesn't even show up in task manager). It is DSL thru a linksys router and his other 3 PC's have no problems. Any ideas on what I should be looking for or could try???