What program is used to make in game graphics like house tiles and other fixed in place items?

[Tanivar]

I'd like to create some graphics that I could send to @Mesanna that would be as easy as possible to add to the game. I'd love to have a wagon to set up on a housing spot with a couple vendors.

 

[Beldin Brightaxe]

Inside UO

Although it doesn't work unless you convert the .UOP files to .MUL files.