Thanks, Drako, that does give me some interesting ideas. But I was really looking for something that doesn't put things in the chat box.
For example, if you call GetAuctionItemInfo("type", index) from a WoW addon, it returns about a dozen different values for you to capture and use. I tried to make it return more values by altering the core, but it didn't work. Is it at all possible to return more values like this? I don't think I can make any new functions for use client-side, so I need to somehow alter the ones that exist. Does anyone know how to do this? Or is there another way I might access a new table client-side?