Convert ASF to Mpeg?

Does anybody know how i convert ASF to MPEG.
So i can burn movies to A VCD…

But they must be in the format *.Dat i guess.
and they must be splitted in 4 parts…

Can anybody help me… with this…please.

I got Easy Cd Creator 4, and when i past an ASF file into the VCD… it seems to work, but not sure it plays into my VCD…thankx