About To Throw In the Towel

[miseryguts]

I have just about exhausted what little patience i have, trying to get this to run at anything like playable speed (avg 10-15fps) & usually looking horribly pixellated as well - (trying various Wii/GCube games) i have waded through multiple tutorials/posts and followed them exactly as far as i am aware - with no or very little improvement.

System Spec:

Windows 7 Ultimate (x64)
Core i7 920 (2.67g)
Ram (6g)
Radeon HD 5870 (1g)
Dolphin Revision 5619 (x64)
Any suggestions/guidance would be most appreciated,

Thanks for listening.