Movie maker sound but no video

[cptpowder]

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.