Hi,
please read:
TrendInfos
I don’t really understand your problem with F8; but to get into SafeMode, press F8 repeatedly after you power-on the pc, until a menu appears.
Then select SafeMode there
And, like Max suggested, you should generally secure your PC better, and run Ad-Aware and Spybot regularly:
www.lavasoft.de
http//security.kolla.de
Also disable ActiveX & scripting in InternetExplorer-Options, except for know, secure sites
