processor affinity for mssql instances

while running multiple instances of mssql 2k on win2k3 is it possible allocate instances cpu-wise ?
if yes , then how is it done and what if there are more instances than no of cpu.
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Hi Toneys,

I guess you could do this if you want,

1. open enterprise manager, right click the instance of SQL server you want to change select properties
2. select the processor tab, deselect the processors you do not want this instance to use.

If you have more instances than processors you could either get more processors or have the instances share processors.  I'm not sure how much benefit you will get from making these changes though.

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