Patching ports

[Mikkel Christensen]

Hi

How do I add a patch to a certain port?
Usually I would use the "patch" program to add the patch to the source code.
But when using ports the system begins compiling right after rewtrieving the source. Thus not giving me a change to apply the patch.
I've seen a folder named "files" in which patches part of the port seem to be located. But just adding the patchfile here apperently wont do much good.
I've tried using the "PATCHFILES" variable in the Makefile but then the system complains the my patchfile does not have a matching MD5 hash.
Does anyone know how to handle this issue?

- Mikkel