Rick, Thanks for the response. I have several additional questions--
1) Do all 4 monitors show up Properties | Settings? 2) Are all the video cards of similar vintage/type? 3) Are you using PCIe (x16 or x4) or a mixture of PCIe, AGP and/or PCI? Thanks Jim > -----Original Message----- > From: Richard Quilhot > I've run xp with 4 attached & 5th tcp/ip with no problems. > I had 1 dual head & 2 single cards > > Rick Q >