I think it makes more sense to upgrade your PCs video card to one with display port output. This will make the pc faster and allow it to work with the apple display.
Normally I would do that, and may in the future, however it's not used for gaming or anything necessitating quick frame rates, it's a media server. Not to mention, it's a hackintosh so there is a bit of a hurdle there as well making sure whatever video card I buy will actually be supported properly.
I ended up buying a Gefen converter on eBay for $15 shipped (way cheaper than what they retail for). It's worth it just to play around with to me.
Makes sense, $15 is well worth the cost. I would be interested to know if the Apple display would work with a passive DVI to Mini Displayport cable like I linked. Its possible the display is smart enough to accept a DVI signal through the same port. After all, it works in the other direction out of a mini displayport.
Just an FYI, I ended up having to buy the AT-DP400, the 200 only supports the 24" monitor (found this in the fine print AFTER getting it). I paid around $75 for the AT-DP400 which was still significantly cheaper than retail, and it works great. The only real issue I'm having is with the sound, but I believe that is the fault of the hackintosh connected to it and not the actual computer. :-)