Vista - Video thumbnails not generating automaticly.

Hello i just recently signed up for this site and now I need some desperate help.
I have searched just about everything that i can think of and none of it is just working out.

Here's my dilemma: I've just recently installed a fresh brand new copy of Vista 64-bit Premium (and after many hours of dealing with dynamic discs and backing up and else) and now noticed that my video thumbnails are not generating. The ONLY videos that generate is the wmv files, other than that my avi files are not generating at all.

I had used the VirtualDubMod fix but that didn't work because the new videos still didn't generate by themselves.

I have these codecs installed: xvid, divx, cccp, and vlc player. But still none works.

I have a laptop with the 32bit version of Premium and it does exactly what it is supposed to do, every one of my videos have thumbnails.

So could you please help me with this problem, i should be able to respond fairly quickly.

OK nevermind i figured it out somehow. The Klite codec pack i guess was what i needed to install.