Quote from ScalperJoe:
Perhaps you can choose a less pricey model as you suggested, the home pavilions, and upgrade the graphics card to either the Nvidia GeForce GTX 550 or the ATI Radeon 6850, as both have 2 DVI inputs. Then you can run two monitors into each DVI slot with a splitter.
Personally, I've found the Nvidia NVS 290 cards are fine for running dual monitors (I use a Dell Workstation with 2 NVS 290's). The newer model is the NVS 295, however I didn't see if HP gives that option.
that sounds interesting Joe, will definitely look into it. My fear is that the power supply might not be enough on one of the home desktops to support a card like that, but will look into it.
How many monitors do you have on that setup?