[Wine] Wine + World of Warcraft + Process Affinity

[gutigen]

So, here's the deal, I got 4 core cpu and I can't utilize it's power :(

WoW has problems with detecting multicore cpus under wine, there is a patch, but it is a bit unstable (so by default it works like on single core cpu). 
My system monitor shows 120% of cpu usage with 100% on first core and rest divided between 3 other (while "wine" process is using around 20% of cpu in d3d mode).

Question is: Could putting "wine" process on different core improve perfromance and if yes, how can I do it?

My spec:
Ubuntu 11.10 64
Phenom II x4 @3.3Ghz
4Gb ram (1333)
GTS 250 1GB