Hi, Dat files are What mpeg files are after they have been burned to a VCD so they are Basicly the same thing and you can usually just rename a .dat file to a .mpg file..But how did you get dat files?? usually the Only way to get .Dat files is to rip them off of a Burned VCD..If you for some reason have Dat files then you can probably just rename them to .mpg and load them into Nero and burn them in VCD Mode But if it try"s to re-encode the Files do not let it Just post back here and I will tell you how to fix the dat file so you can Burn it as a VCD without re-encodeing the file which would ruin the quality.....Cheers