some sweet n easy way to make seamless brickwalls

download hires texture pack http://www.texturemate.com/content/texturepacks or get some off http://www.cgtextures.com/textures.php?t=browse&q=1

cut out individual bricks and put them in

free for non commercial use http://www.bricksntiles.com/

if your good at making textures, all you have todo is touch up the mortar

put some 2048x2048 into q4 and see if the work, otherwise use 1024, not that they make much difference from 512, the render imagesize has to be put up in the sdk for more detail and calcfov recoded