Ok, well, i've always had a problem with Flash interfaces, i mean, i've been making flash sites and stuff for a while, but i could never make a decent background for a flash site. for example, Eric Jordans site, but then again, he's really good at flash, but when you first enter his site, i wanted to know, how do you make backgrounds like that? i've been trying to do them in FLash, No luck, i've tried it in Photoshop 6, some luck, but still not good enough, and i've tried it with 3D Studio Max 3.1, and R2 at a friends house, and still no real luck , i tried mixing them together, but it looks....weird . I personally have an idea on what it's going to look like, but i can never get it to look how it's supposed to. Well here's my question if you haven't already figured it out, How do you make those AMAZING backgrounds??

can someone help?
well if someone can, it's very appreciated! =D