Linchy
I haven't had that problem and I also have a GeForce 4 (128mb) with the latest Nvidia and Direct X drivers. My processor is an Athlon XP that runs at 1.7gHz. I have 2gb ram.
If you bring up the inventory (i) and then shift-left-click an item to bring up information on it, does that window also come up blank? If it doesn't, I would then look at the Chat Configs (Right click on the text window that is in the bottom center of the screen) and then navigate the menu that pops up.
