Dolphin Emulator, What Specs & Plugins?

[mosesff]

Hello,

Could you tell me what specifications I would need to run Dolphin at a suitable framerate and plugins I would need.

My specs are ...

AMD Sempron 3200+ 1.81 GHZ
(Avg clock speed: 1808.3 MHz)
32Bit Vista Basic
1919 Mb Ram (2GB Ram- 2 x Kingston DDR2 Ram)
Motherboard: AliveNF6G-DVI
Chipset: Nvidia MCP61
Graphics Card: Integreated Nvidia 6xxx (I put the x's because is 6000 something although I cant me too sure)

I just wanted to know what sort of system I would need to run.

I was thinking to upgrade to..

AMD 64 X 2 6000+ 3.0GHZ 2000 Mhz (Dual Core AMD)
Upgrade to 4GB Ram
Install a external dvi graphics card Inno3D Geforce 8600GT 1400MHz 256MB Graphics Card - I-8600GT-G5F3CD

would this increase the framerate as I am getting 2-6 fps currently. Sometimes 12-20fps.