Hi, please run HJT and check these items.
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.ie/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.ie/
O2 - BHO: Nothing - {b0398eca-0bcd-4645-8261-5e9dc70248d0} - C:\WINNT\system32\hpD72A.tmp
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O16 - DPF: ChatSpace Full Java Client 4.0.0.301 - http://www.ldschat.com:8569/Java/cfs40301.cab
Click Fix Checked.
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Then please boot into safe mode (Press F8 on startup, then select safe mode.) and delete the following File.
C:\WINNT\system32\hpD72A.tmp
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I see you have ewido...scan with it and post that log along with a new HJT log.