On Mon, 03 Sep 2007 14:47:58 -0500 (CDT), thekirkline1941 at verizon.net wrote: > Thanks again for the help in installing the PCI card and new hard > drive. However, I chickened out when it came to putting in both 500 > GB drives. Someone cautioned that that might be too much for the > power supply.... Why not just determine how much power is available above what is needed for running the rest of the computer components and how much power the drives pull. If they pull less power than what is provided, they should be OK. . . . . . . . . . . . . . . . . . . . . . . O'Brien