ok i think i have sorted i

ok i think i have sorted it, u need tuneup utillities 2007 once u have downloaded it go onto it and go to customize and analyze administer and control then tune up system information then click continue and unclick the antivirus xp 2008 [its under a different name but its got the same icon so u should recognise it] then right click it and click properties to find out where the file is hidden, [keep this up whilst u do the next step as u will come back to is in a second]
now go to administer and control then tuneup process manager then terminate the program under the same name that antivirus xp 2008 was under when we found it earlier. now that u have done that u can successfully uninstall the program in the file that u found it in earlier. after this delete every icon link to it u can find. once this is done close tunup and restart ur computer and it shud be gone.
after this u need to get ur desktop and screensaver tab back. you go to start then run then type in regedit the click HKEY_CURRENT_USER> Software> microsoft> windows> current version> policies> system. then where it says nodispbackgroundpage right click then click modify and change it to 0, now do the same to nodispscrsavpage after this you should have full functions to your background properties. i know this is long winded but this is the only way i could do it. hope this helps. if ur lost at any point or need help lemme know! louise