how do you use the wc3 patch

I assume you mean War Craft 3. Which patch are you talking about?? The Version 1.01b Upgrade Patch??

Yes. I downloaded the Warcraft 3 version 1.01b and 1.0 ENG from Megagames. I can't get either of them to work.

Thanks

You mean you downloaded the 1.01b patch or just he 1.01b fixed EXE. If it is just the EXE, run the official patch first (you may need to have the original EXE for it to work.) then copy over the crack for 1.01b making sure to rename the original EXE first, incase you need it later.