Search & Extract

Images

jpg jpeg 2000 gif png pdf wmf emf tiff eps pict bmp

Video

mov mpeg avi wmv

Sound

mp3 wav System 7 au aiff

Text

ascii rtf html

From:

avi cab cache chm dmg doc emlx exe ithmb m4p mht mp3 pdf pps ppt raw swf wps xls zip and other formats

If you received this file by email from someone you don't know it is a likely Windows virus. You can find out which kind by visiting: VitusTotal - Online Virus Scanner

If it is an actual Windows screen saver you may feed it into File Juicer to see if there are any useful images inside.