Upgrading artwork from TGE to TGEA

Is there a thread already posted somewhere explaining the steps required to upgrade existing artwork from TGE to TGEA? I noticed that I can drop my exiting models into TGEA but they are not textured. Clearly the texturing has changed (yes, I am drooling over those normal maps). What artwork resources will just work, and which ones need to be refactored to work, in TGEA?

-Greg

(srry if this was already posted elsewhere and I didn't see it.)