My brother bought one of these as a Newegg refurb back in 2006, and I set it up for him and installed Win XP on it. In 2012, I ended up with one I bought for cheap, and I finally used it to build a workstation computer at my then job. I wasn't officially an IT person, but we had old broken down computers that we used to look up parts, and I would periodically upgrade them. I set it up with two gigs of DDR, an IDE hard drive, and an E2200 Pentium D. The onboard sound didn't work, so I used an old Creative card that I'd gotten for free somewhere, and the motherboard didn't come with a backplate, but I've never known that to be a problem other than aesthetically. I left that job in April of 2014.
Recently I saw an ad on Craigslist for a couple of computer towers for free. One of them was an HP, but the other looked familiar - it was a generic type case, and it looked identical to the one I had used with the Dual VSTA. I scored the computers, and sure enough, one of them was the VSTA that I had setup at my old job. So I got it back.
Playing with it this last week, I discovered some things. It turns out that either I, or the guy I bought it from years ago, had already flashed it to the PC Treiber BIOS. It works fine with the inexpensive high density DDR2 PC6400 RAM ("For AMD system") that you can get for cheap from AliExpress, and I have four gigs installed. It's unfortunate about the chipset limitation, because I tried a four gig stick of DDR2, and it recognized it - you could run 8 gigs if not for the memory addressing limitation. It works well with Windows 8 and the 6800 GT AGP card I have in it. As someone else mentioned, Windows 10 will no longer work with an AGP card - you can install it, but once it reaches a certain point in the updates, it reboots to a black screen and stays there. I tried a couple of WD 64 meg cache drives in RAID zero, and the speed in Win 8 wasn't impressive, and it seemed very slow in Win 10, so I went back to a single drive. I bought an E7600 for $6.00 with free shipping on Ebay, so that should be here soon. I have almost as much fun playing around with old computer parts as I do with new ones, but it costs so much less.