Help freddy42.exe infected computer

[Raven]

hit start- search

enter this *.exe

............. that's asterisk dot exe

now every exe file on your PC is listed

now go down the list and look for the one that's dated
or created on may 15 2009

also you can simply do a search for all files created on march 15th

then delete the all the ones created close to the time
you were there until the browser hijacking is gone.