my friend says this thing pops up, and tells him to goto this site
and to download, and install it and stuff...
its fake, right?
What browser is he using? I am guessing IE?
I would suggest Getting ZoneAlarm Pro, using it to scan for Spywayre, then getting Avira AntiVir and scanning for Virii/Trojans.
Also, if he is using IE, tell him to switch to Opers or FireFox.