So when I open avi files in WMM I get sound but no video. I updated my codec from here: http://www.majorgeeks.com/Vista_Codec_Package_d5326.html still not working. I tried some of the tips here: http://www.msfn.org/board/index.php?showtopic=125956 Cant even find thew 64bit tools only 32 bit tools. Iam def running a 64 bit op system. Anyone have any ideas.