Blending grafitti to my brick wall

HI guys, sorry Im a new boy to Photshop. Ive got two images, one is a grafitti text Ive dun using a cool tutorial from Kirupa, the other is a brick wall made from scratch using an VERY good [URL=“”]external tutorial from Photoshop Cafe’.

Any ideas how I can blend these two together so it looks like the writing is on the wall using Photoshop 6? They are in separate Layers at the moment. I imagine I need to do some Layer masking, but how?

Many thanks! :thumb2: