Is the dell XPS 630 a good gaming PC would it need anything added if it was only for moderate gaming

well here are the specs 2.4GHz Intel Core 2 Quad Q6600; 2GB 800MHz RAM; Dell OPP150 motherboard; 2 x 500GB hard disks; 2 x 512MB Nvidia GeForce 8800 GT graphics cards; 24in Dell Ultrasharp 2408WFP TFT; Toshiba TS-H653B DVD writer; SoundBlaster X-Fi XtremeGamer sound card; gigabit ethernet; 19-in-1 card reader; 6 x USB; 2 x FireWire; Windows Vista Home Premium; 1yr RTB warranty; 195 x 519 x 489mm (WDH).

Looking at those specs it looks as if that will play every game out at reasonably high specs so yes it would be a good PC for gaming.

SteVy