?!?!?!?!?!
If you're talking about the MSOffice programs or other applications, then it's normal (the autorecovery) to appear in the directory where you save the file (in this case, the desktop folder)
I think there is an option to change that from the tools menu of MSOffice programs.
But I think you should just go to any folder>click the tools menu> click folder options, view tab>and check Do not show hidden files and folders and ok.
If you are talking about something else, like geting rid of temp files in general, then install CCleaner.