Recently made some huge upgrades (for me anyway):
CPU: Intel Core2Duo E4500 2.2GHz 800FSB 2MB Cache ($149.90 + tax)
GPU: Sapphire Radeon HD2600XT AGP 256MB GDDR3 ($112.99 + s&h)
These upgrades blow my old system out of the water, by far.
OLDCPU: Intel Celeron D 2.66GHz
OLDGPU: nVidia FX5200 128MB AGP
CPU: Intel Core2Duo E4500 2.2GHz 800FSB 2MB Cache ($149.90 + tax)
GPU: Sapphire Radeon HD2600XT AGP 256MB GDDR3 ($112.99 + s&h)
These upgrades blow my old system out of the water, by far.
OLDCPU: Intel Celeron D 2.66GHz
OLDGPU: nVidia FX5200 128MB AGP