first download the software from this link
after that run that "xpscene"
step 1:-input only wmv,mpg,avi file into it.
step 2:-give the location of output file for example save in a "desktop"
step 3:-click on create button.
right click on desktop select "properties"
in display properties select "desktop"
click on "browse" and locate the save file (which you have save in a desktop)
after that click on apply and press ok