Thanks for the replies guys.

I didn't know the unpacker was only for modders, maybe I missed that instruction somewhere.

I did create a folder especially for the patch, exactly as instructed in the 'read me'. Then when the patch was downloaded and 'installed' I was expecting to have to point it in the direction of a folder but that option wasn't there. All the files were simply dumped onto my desktop.

Apart from these difficulties, do you think my game is now patched?