Here is your list of evil-doers:
Read this very comprehensive post (by NonSuch) with exact instructions first,
http://help.lockergnome.com/index.php?showtopic=24731&st=0&#entry179985
then run HJT as described, with this lot:
C:\Program Files\burst\burst.exe
C:\Program Files\burst\btdownloadheadless.exe
C:\Program Files\Windows SyncroAd\SyncroAd.exe
C:\Program Files\Windows SyncroAd\WinSync.exe
O2 - BHO: (no name) - {DFFEEB8B-18E2-862A-A7D3-12BF6B83543E} - (no file)
O2 - BHO: ADP UrlCatcher Class - {F4E04583-354E-4076-BE7D-ED6A80FD66DA} - C:\WINDOWS\system32\msbe.dll
O3 - Toolbar: (no name) - {B83AAB5A-BCAB-533C-3B2E-C65B74CE3B36} - (no file)
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Program Files\Messenger Plus! 3\MsgPlus.exe"
O4 - HKLM\..\Run: [Windows SyncroAd] C:\Program Files\Windows SyncroAd\SyncroAd.exe
O4 - HKLM\..\Run: [WebRebates0] "C:\Program Files\Web_Rebates\WebRebates0.exe"
O8 - Extra context menu item: Web Rebates - file://C:\Program Files\Web_Rebates\Sy1150\Tp1150\scri1150a.htm
O9 - Extra button: Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\Program Files\Yahoo!\Messenger\yhexbmes0411.dll
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\Program Files\Yahoo!\Messenger\yhexbmes0411.dll
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\System32\Shdocvw.dll
mark ALL of these O16s to be "fixed"
O16 - DPF: blabla...