I love the 6000 series. I'm just saying that since it's best paired with a Pentium 4 or later, there is a high chance that an AGP slot will already be present. This is why the 6200 as a PCI card is probably best suited for use as an additional display.
I think that when considering a PCI card as the primary video output, the class of hardware is probably going to be designed for Windows 98 or earlier, and exclusive to situations when AGP is absent or buggy. In the testing that I've done previously with NVIDIA, I've found that their drivers are unstable on older chipsets, such as the venerable 440BX. This is why I warn that pairing the 6200 pre-Pentium 4 is generally unreliable.
There is also a question as to whether this card requires 3.3V on the PCI slot to function, a feature which is also missing from many early motherboards.
All of these are important caveats to consider with this particular card.