Adding RAM is definitely a good idea. A second, very fast hard drive to store your swapfile (WD Raptor 10,000 RPM) also helps. And - maybe wild - you could upgrade your graphics card to an nVidia Quadra. That Radeon is a good game card, but OpenGL sucks on it. The nVidia Quadra series has excellent OpenGL support - but DirectX sucks on them, so they're lousy as game cards. If you want both game performance and OpenGL performance, nVidia 6600 or 6800 might be a good choice. As for upgrading the whole system, I'd advise waiting for the dual-core Athlon64s, they're due this fall.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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