I am upgrading some old Windows 98 computers to run XP. I am currently planing on putting in a low end MOBO with one PCI-e x16, one PCI-e x1, two PCI v 2.0, and integrated graphics. I am also planning on putting 1 GB memory in and a 2.1 GHz Dual core AMD Athlon X2 4000+. The computer will have 120 GB HDD and a new DVD +\- Burner, and a new 300 watt PSU. I am not putting in a graphics card because the computers are going to low end clients who don't really need one to do the work they are going to do with it. They are basically just going to play old games and use Word, Excel, and Powerpoint. Finally, I am planning on putting in Windows XP Home SP2 because Ii know it will not have any bugs to be worked out like Vista has.