Your processor and your video card sucks, you won't be able to use Dolphin at all. Even if you could boot any games, expect them to run no faster than a complete slideshow.
The Athlon XP lacks the SSE2 instruction set which is a hardware feature, and the FX line of Geforce cards lack OpenGL 2.x and proper shader model 2.0 support. Both are essential hardware features required to even boot games in Dolphin, you still need hardware that is powerful enough to garner decent performance with games in Dolphin.
Stick to playing on your Gamecube/Wii or be prepared to fork over some cash for a rather expensive upgrade to play games on Dolphin with somewhat decent performance.
In the end sticking to your Gamecube/Wii would be the cheaper option, since you would need to buy or build an entirely new system.
Also learn to read moar, the is a sticky that clearly states the minimum requirements and mention that the Athlon XP and FX line of cards are not supported in Dolphin.
The Athlon XP lacks the SSE2 instruction set which is a hardware feature, and the FX line of Geforce cards lack OpenGL 2.x and proper shader model 2.0 support. Both are essential hardware features required to even boot games in Dolphin, you still need hardware that is powerful enough to garner decent performance with games in Dolphin.
Stick to playing on your Gamecube/Wii or be prepared to fork over some cash for a rather expensive upgrade to play games on Dolphin with somewhat decent performance.
In the end sticking to your Gamecube/Wii would be the cheaper option, since you would need to buy or build an entirely new system.
Also learn to read moar, the is a sticky that clearly states the minimum requirements and mention that the Athlon XP and FX line of cards are not supported in Dolphin.