Yes the limitation is because of 32 bit addressing. You can use the /3GB
switch but this may actually cause the computer to run slower with most
programs. In Vista you set this with BCEdit and the "increaseuserva"
parameter. It sounds like you need a 64 bit OS. I think the answer on
concurrent sessions is no but I'm not 100% sure.
http://msdn2.microsoft.com/en-us/library/aa906211.aspx
--
Kerry Brown
Microsoft MVP - Shell/User
http://www.vistahelp.ca
"Peter de B. Harrington" <peter.harrington@ohio.edu> wrote in message
news:ORwhX8ITHHA.3592@TK2MSFTNGP03.phx.gbl...
> HI:
>
> I run many memory intensive calculations. I am curious if the 32 bit
> Vista (business edition) still has the limit on memory allocation of 2
> GB/thread the way XP does?
>
> Is there an improvement in virtual memory management over XP?
>
> Lastly, does Vista support multiple users remotely logged into the same
> computer?
>
> Thanks,
>
> Pete
>