Nope I have no idea.
intell pentium4
SIS650 (vid card)
windows XP
software rendering
Also I cant see the movies.
Is that all you need?
Well, you also need to run the "DirectShow Installer" off of the Install CD, it contains the codec you need to see the movies. If that doesn't work, then get the "upside-down movie patch", as that should both either install or update the codec with a somewhat newer version.
Don't worry about the installer trying to replace the rest of DirectShow with an older version; it won't. At most, it'll just install the codec, but the "self-preservation" code of DirectX itself will also kick in and ensure that the older version of DirectShow will not overwrite the version you have, as far as I know.