The capacity planning tools for Terminal Server might work for you.
(RoboServer / RoboClient / SMClient)
Details on how to use these can be found here:
For Windows 2000:
http://www.microsoft.com/windows2000/techinfo/administration/terminal/tscaling.asp
For Windows 2003:
http://www.microsoft.com/downloads/details.aspx?familyid=70524463-7c42-4372-ab37
-d8c8987a71da&displaylang=en

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MikeVa [MSFT]
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> Hi!
>
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>
> Best regards, Konstantin Knyazev.