Colin,
Another place to look is in EULA.TXT - in mine it is about para 1. and quote
You may permit a maximum
of ten (10) computers or other electronic devices (each
a "Device") to connect to the Workstation Computer to
utilize the services of the Product solely for File and
Print services, Internet Information Services, and remote
access (including connection sharing and telephony
services). The ten connection maximum includes any
indirect connections made through "multiplexing" or other
software or hardware which pools or aggregates
unquote
HTH

>Hi
>
>I understand that the number of concurrent Win2k Pro sessions is limited to 10.
>
>Has this been proven in practice?
>
>Is this a limit on the number of machines that can be logged in at any one time or the number that can access a specific app?
>
>Colin Northway