Close all (browser) windows & rescan with hijackthis. When the scan is finished place a check in the box to the left of the following entries & click 'fix checked' :
O4 - HKCU\..\RunOnce: [Updater] rundll32 C:\DOCUME~1\Brad\APPLIC~1\mshy\mshy.dll,UpdateDll s
O8 - Extra context menu item: &iSearch The Web - res://C:\WINDOWS\System32\toolbar.dll/SEARCH.HTML
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) - http://207.188.7.150/014a51482880a6...tzip/RdxIE6.cab
Reboot into safe mode following the instructions here & navigate to & delete the following if found:
C:\DOCUME~1\Brad\APPLIC~1\mshy\mshy.dll<<<<
In order to view these files you may have to select 'show hidden files/folders.' Instructions on how to here.
Reboot normally after doing the above then post a fresh log plz.