I built my first PC about 3 months ago for $2500 including a replacement mobo and Windows XP Pro SP2. What I want to know is how long do I have on this setup before I have to rebuild?

Here's what I have:

HDD's: 1x Western Digital Raptor 74gb ADFD SATA 1.5gb/s, 2x Western Digital Caviar SE 250gb SATA 3gb/s

CPU: AMD Athlon 64 X2 3800+ Skt 939

MOBO: ASUS A8N-SLi Deluxe nForce 4 SLi Skt 939

RAM: 2gb Kingston Value RAM CAS Latency 2.5-3-3-6

VGA: BFG GeForce 7900GTX OC'ed 512mb

DVD Drive: Lite-On Dual Layer DVD Drive w/ Lightscribe

FDD: Samsung 3.5" 1.44mb FDD

Sound Card: Creative Labs Sound Blaster Audigy 4

Tower: Thermaltake Tsunami ATX Mid tower

PSU: PC Power & Cooling 510w (650w max) Turbo Cool SLi

Scores a 9350 in 3DMark05 and a 5942 in 3DMark06.

Would like to get a timeline to upgrade if possible and no "Upgrade to C2D" comments please .

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My System:

AMD 64 X2 3800+ OC'ed to 2.2 Ghz, BFG 7900 GTX 512 mb OC'ed, ASUS A8N-SLi Deluxe, 2 Gb Kingston Value RAM CAS Latency 2.5-3-3-6, Creative Labs Sound Blaster Audigy 4, Westen Digital 74 Gb Ratop ADFD, 2x Western Digital 250 Gb Caviar SE, 3x Thermaltake Hardcano 14 HDD coolers, Thermaltake Blue Orb II CPU cooler, Zalman VF-Cu 900 Blue LED VGA cooler, Thermaltake Extreme Spirit Northbridge cooler, and a PC Power & Cooling 510w PSU.