there should be a link on the background itself.. in like orange or yellow stating.. "restore active desktop" or something similar to it.. (if its the same one i have had before, all white, writing, etc..) ...BUT
first off, you need to do a spyware scan and even virus scan to make sure that spyware have been removed, so it wont happen again..
when you say not appear, do you mean the display options or the right click? if not.. try going into your control panel and click on "display"