Now I know how to make Worms3d and W4M work on vista!
....Just edit the permissions on the properties and tick the box that says "Full Control".

Note:Not guarranteed to work.

Yet another note: All movies does not work on W3D.

Both games work fine in Vista already.

Oh, and the reasons videos may not work for you is you're using the default video drivers that came with Vista. Go to the manufacturer's website and downlaod the latest drivers for your card and they should work fine. Mine do.

I forgot to edit my post..
It should've said "I think many know this already..."