[fly_zo]

... you'll be fine on win7 64 and Vista 64 ( service pack2) too ...

i have dual boot install ( Vista 64 ultimate + s/p 2 and Win7 64 ultimate 7127 ) and Il2 works pretty good (+ freetrack ) on both

Dual core 2.6 E5300
MB gigabyte EP45-DS3 ( pci exp x16 generation 2)
4 Gb DDR2
gigabyte NV 9800GT 512 ( pci exp x16 generation 2)
600W PSU

just make sure you have proper settings for your system , Nvidia and IL2

latest drivers (NV)
latest beta dll's
direct x9c
java


reg
Z