Quoting John Fletcher net@twoedged.org:
Can anyone tell me a free program that can be used to apply patch files under Windows? There's a page in the drupal handbook about this but none of the programs seemed to work.
Interestingly a number of programs will allow you to create diff files... but what can I use to apply them?
I highly suggest MSYS from http://www.mingw.org. But there is also http://unxutils.sourceforge.net/ which includes a patch command.
Earnie -- http://for-my-kids.com/ -- http://give-me-an-offer.com/