Doom Weapon Wad Problems

Well, I recently found some great weapon mods for doom, including one that lets you have all Imp Weapons (fireball, claws, etc...). This was worlds GREAT in Doom Legacy, but I can't get it to work in DOOM-PSP V0.05. I try to include it as a PWad, but all that does is change the sounds, and the HUD, not the accual weapons. (the way they look, or act.) :/ Anyone know a way to get this working, or is it not yet supported in this version of PSP-Doom? If needed, I can upload the WAD. ;)

upload the entire file, doom legacy, does it use 3d models?

Here you go: Click Here I don't beleive it uses 3D Models. Since when do any DOOM Weapons use 3D models? o_O

doom legacy is the engine used in doomsday.