Restore points fail

Hello,
I think i might have taken a malware hit. my google and yahoo are broken if i click on a link it takes me to a totaly difrent web page. I also get a send error report "google installer has encountered a problem and needs to close". I have tried some regestry programs and anti-spy but they don't seem to work. some of the malware and spyware programs will not even load up. I also tried system restore but that just freezes up or does not work at all. any other suggestions please!