getting pi###d of with patching please help.

[eggy]

i am starting to give up on patching
for some reason every game ive tried to patch tells me the patch is no suitable
i am useing the right one (PAL)
so far ive tried dino crisis, f1 2000,
and mission impossalbe, all the games i have tried to patch so far have been rented,(BLOCKBUSTER), will this make a differance? befor long the playstation and pc will be out of the window.i am using ppf to aply the patches
help