Non-UI editing of texture assets?

[meathat]

Is this possible? I grabbed Blaz's vpk extractor and found the files I want to alter. However I'm unsure of how to make EQ2 look at the altered ones rather than the ones in the vpk. I was able to do this ~2 years ago in SWG but I don't recall what I did or even if it's relavent to EQ2.

Any help would be appreciated, some of these textures are really getting to me