Cheers for that. My current character is not all that suited to zbrush, but I'm gonna try some more stuff with it soon for my project.
Found a decent wood image on the net after all - tweaked it in photoshop. For the bump, difuse and specular eccentricity, I've just used a single desaturated image, but I reckon it's looking pretty good.
A couple of images if anyone is interested: