Go to add/remove programs and uninstall the following if there;
Bargain Buddy
Internet Optimizer

Disable Adaware's Adwatch as it will interfere with the following repairs.

Scan with hijackthis and tick the boxes next to all the following entries, then close all browser and explorer windows, and hit the "Fix checked" button.

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.startpagina.nl
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.startpagina.nl
R3 - URLSearchHook: (no name) - _{5D60FF48-95BE-4956-B4C6-6BB168A70310} - (no file)

O2 - BHO: (no name) - {00000010-6F7D-442C-93E3-4A4827C2E4C8} - (no file)
O2 - BHO: (no name) - {397D7D63-816E-4ECF-8761-775C932C5CF1} - C:\WINDOWS\iDonate.dll

O4 - HKLM\..\Run: [ap9h4qmo] C:\WINDOWS\system32\ap9h4qmo.exe
O4 - HKLM\..\Run: [gah95on6] C:\WINDOWS\system32\gah95on6.exe

O4 - HKLM\..\Run: [Bargains] C:\Program Files\Bargain Buddy\bin\bargains.exe
O4 - HKLM\..\Run: [Internet Optimizer] "C:\Program Files\Internet Optimizer\optimize.exe"
O4 - HKLM\..\Run: [updater] C:\Program Files\Common files\updater\wupdater.exe
O4 - HKCU\..\Run: [WebSpecials] rundll32 "C:\Program Files\WebSpecials\webspec.dll",run

Now I need you to delete all of the following;

C:\Program Files\WebSpecials << This folder
C:\Program Files\Common files\updater << This folder
C:\Program Files\Internet Optimizer << This folder
C:\Program Files\Bargain Buddy << This folder

C:\WINDOWS\system32\gah95on6.exe << This file
C:\WINDOWS\system32\ap9h4qmo.exe << This file