Place to buy enclosures

[Demon-Xanth]

I'm looking into building an MP3 player out of a P90@100 on an Intel Advanced/ZP motherboard (baby AT) and am looking for an enclosure that'll house it. I can fit the power supply over the board and not block off the slots required for the cards (3 ISA cards) making the required footprint the exact size of the motherboard and highth of the cards. About 12"x15"x6" (I'll have to measure).

Anyone know of a good place to get an enclosure for this? (cheap) I want it to look reasonably good as I plan on placing a 4x20 backlit LCD and modified Gravis Gamepad for a user interface and embed them into the face.