Multi Core threading

[Flubber]

I’m launching 4 Brink Server on my 2008 R2, with for each a “exec_maxThreads 1” for each, doesn’t seems to work :
http://f.cl.ly/items/0b1r111g2k0z2X3A1F2G/Screen%20shot%202011-05-13%20at%206.04.13%20PM.png

Any ideas?