Good Computer Set Out For FSX

[Cessna0123456789]

Hi,
My computer is not soooo good for fsx, it's satisfactory but not well enough.
Could someone recommend me a good computer setup for fsx with a good graphics and sound card?
Thanks
P.s. And if you can, can someone tell me where to buy them?

[fxsttcb]

Budget constraints would be helpful! A top shelf 6 core could run $3000+, and a decently fast dually FSX system can be under $1000...Don