I don't know how it would instruct the SYSSETUP.INF to install it.I suppose you would have to change the wmp.inf to wmp 10 inf in the SYSSETUP.INF . What the bat file does : it modifies and then compresses it. I do this with all other exe's,dll's etc and all i did was to replace the files in my winxp cd. hahahaha! i forgot to put the other programs in there as well, otherwise it wont work. Disregard the download above.