Help me please.

K, so I'm trying to change the use key from "u" to something different, and it won't allow me to. I change it and the effect is still the same, I have to click u to use an artifact, etc. Please help.

I think UT2004RPG commandeers the U, L and bracket keys, overriding whatever you have bound to those keys. So you really can't change them. But you can certainly map those functions to different keys.

You can bind most keys in-game by opening the console and typing set input <name of key> <command>. For example, to bind use artifact to the key "," you would type set input comma inventoryactivate. (Not case sensitive.)

Or open your User.ini file (in UT2004/system) and find Comma= and add:

Comma=inventoryactivate

Here are some other basic keybinds:

DropHealth - throws 25 health as a blue cross pickup
DropAdrenaline - throws 25 adrenaline as a big adrenaline pill
tossartifact - tosses current artifact.
InventoryNext
InventoryPrevious
InventoryActivate