Okay, I have a problem here. I had setup of AMD Athlon64 3700+, eVGA GeForce 7800GTX, Seagate 200GB 8mb cache 7200 RPM ATA HDD, Antec 550w PSU, and this motherboard, which is Asus A8N-SLI deluxe. Recently, I bought an oem version of Western Digtial 250GB 16mb cache 7200RPM SATAII HDD. Now how...