Gary- You've been hijacked.
You might need to get 'Hijack this', a prog designed to identify and produce log files of this sort of problem.
Here ya go step by step;
Step 1
We need to disable your Microsoft AntiSpyware Real-time Protection as it may interfere with the fixes that we need to make.
* Open Microsoft AntiSpyware.
* Click on Options, Settings.
* In the left pane, click on Real-time Protection.
* Under Startup Options uncheck Enable the Microsoft AntiSpyware Security Agents on startup (recommended).
* Under Real-time spyware threat protection uncheck Enable real-time spyware threat protection (recommended).
* After you uncheck these, click on the Save button and close Microsoft AntiSpyware.
* Right click on the Microsoft AntiSpyware icon on the taskbar and select Shutdown Microsoft AntiSpyware.
After the computer is clean, it is very important that you enable Real-time Protection again.
Step 2
Open HijackThis, run a scan, then check the following:
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = res://shdocnvt.dll/blank.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
O4 - HKLM\..\Run: [Fast Home] C:\WINDOWS\system32\svcnvt.exe home
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O21 - SSODL: SysTray.Exgr - {5368D1FC-4F5C-4f1b-B134-E67214FC78E9} - C:\WINDOWS\System32\iflelqeg.dll (file missing)
Fix these if you or an administrator did not set these restrictions with Internet Explorer or a program such as Spybot S&D wasn't used to set them.
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O6 - HKLM\Software\Policies\Microsoft\Internet Explorer\Control Panel present
With all other programs and browsers closed, click fix checked.
Step 3
Please set your computer to show all files.
* Double-click My Computer.
* Click the Tools menu, and then click Folder Options.
* Click the View tab.
* Clear "Hide file extensions for known file types."
* Under the "Hidden files" folder, select "Show hidden files and folders."
* Clear "Hide protected operating system files."
* Click Apply, and then click OK.
You will need to reverse this process when all steps are done.
Step 4
Please delete the following files:
C:\WINDOWS\system32\svcnvt.exe
C:\WINDOWS\System32\iflelqeg.dll
If you have any problem deleting these items, reboot into Safe Mode (tap F8 during bootup, use arrow keys to select Safe Mode, then hit 'enter') and try again.
Step 5
Reboot normally and scan with HijackThis