When ordering case that is "Pentium 4 ready," ignore that label and look for "comes with power supply."
I could have sworn I ordered a case WITH a power supply, because I recall searching for a case that was ATX and had a 400watt power supply. But when I look at my invoice, no mention of a power supply is made, and the item on the site has no power supply listed. I seriously, seriously doubt this was bait-and-switch or some fraud of any kind, but more of my own dumbassery.
Sorry, CR... one power supply on order...
I am bummed, because putting together a new computer was one of goals for this weekend. But the case looks SWEET! And it's well-made, too, not some cheap plastic I thought it was going to be.