how to add a patch to a game?
 

I was told that all I needed to do was to add a little patch(crackfile) to your copy? Does this mean I need to burn a new disc and where is this patch, I have not been able to find it?

you can find patches here:
http://www.megagames.com/psx/psx_patches.htm

the best program to patch with is cdrwin. you will find tutorials and program here:
www.psxcopyworld.co.uk

there is a nice tutorial for the whole patching process on the megagames patch page in sm83's link above.