I donīt have HL2, too and Iīm not sure if I will ever buy it. Although itīs only 29 in our stores. You only need to make the right size and convert the image into palette-colours (256), then copy it into the right wally-wad and adjust the brightness. Takes about a minute for one Texture (not if you use super-complicated filters and layers in Photoshop). Iīm working on a viking-like fantasy-cs-map at the moment and made some texes for it. I donīt have much time and donīt know when I can continue this project, but it was great fun so far!