Just as the title asks, do I really need to upgrade my PC? I am a heavy gamer and I can play most games at med-high (f.e.a.r, quake 4 ect) settings. How much longer will my Athlon XP 2700+ and ASUS 6800XT (at ultra spec's) last me? What do you guys reccomend for upgrades? I don't have to much cash to upgrade with (~$400).