I'm stuck! Patch backup on hold! May-Day,May-Day!

[1sparky1]

I'm trying to back up my RE Survivor disk. My psx has a mod chip. I have cdrwin. Completed cd image file. Now I have to "extract the patch archive to the path of the cd image file." WHAT!! I open a ms-dos prompt and the do WHAT! I've tried a couple of things but I'm going around in circles.
I'm not sure what patching system I should use, or how to use it once I've got it. Is there anyone who could walk me through this?