WMV in VirtualDub

[Hartley]

Good evening,

I downloaded the latest version of VirtualDub which replaces the VirtualDub-MPEG2 I used earlier ...
I downloaded a pack which allows me to open a number of video files to various extensions, such as WMV.

However, if the parser reads well me WMV video, the screen stays black prévisulation with writing in the middle "CODEC MISSING."
In the file properties, there is actually in line Codec fourcc: missing codec (WMV2).

Of course, my computer (which is under Vista) has these codecs there, I can play videos with any player ...
Should I download something else for it to work well with VirtualDub? (eg I had downloaded the Lame MP3 ACM codec to care properly MP3)

Thank you for your answers,

[Bency]

Windows Media Codecs Download Package Version 8.0