You really need to go here READ ME Before Posting A Request For Assistance!
first and follow all of the steps given, and in the order given.
Once you have completed all those steps then give us a NEW HiJackThis log but be certain that you give us a full log, including the top portion of the log that looks like this;

Logfile of HijackThis v1.99.1
Scan saved at 15:22:13, on 21/02/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Judy