Just built my new pc, im very happy with it but still even with this spec it struggles to handle Flight Sim X at full graphics, is my graphics card up to it???

ASUS 7600 Silent Graphics Card 256 MB £69
Asus P5B Deluxe Mobo- Core 2 Extreme LGA775 iP965 ATX Dual Gigabit £118
Intel Core 2 Duo E6400 - 2.13GHz (2048KB L2 Cache) 1066MHz FSB £164
2 x 1024mb DDR2 PC5300 £120
Maxtor DiamondMax10 320Gb SATA-II Hard Drive with 16Mb Buffer 69
X-Blade Black ATX Tower case with 450 Watt PSU & Side Window £39
NEC ND-4571 16x DVD+/- Rewriter with Labelflash Technology £26

Total £605