If workstation-to-workstation is fast, then the network is probably

okay, isn't it? I presume this was an in-place upgrade, and that these

machines were all working together fine before the upgrade. Further,

I'll presume after the upgrade performance was noticably slower,

provoking you to perform the tests you described. (Hint: a little more

information would have let me concentrate on the problem, instead of

trying to figure out why you were asking).

What's the network configuration? Ethernet 10/100, switched or hub?

Hubs are so nineties, and can be replaced with a switch for less than

$100.

Since you did all the work on the server, I'd suspect one of the

components there is causing the problem. SCSI systems are far easier to

work with than they used to be, but could the problem be a

misconfigured hard disk, driver or cable? Examine the server logs,

event logs, device manager, disk manager, etc. Did you replace multiple

drives with one? Why?

Ping the server from a workstation and workstation to the server to

confirm basic networking speed is okay.

Half-a-gigabyte is a huge amount of memory, when you think about it. On

the other hand, SBS 2003 will easily use that all up. Why are you using

SBS, and what are you running on it - Exchange, SQL Server, IIS,

Firewall, etc? What else runs on this machine? Is the dental software

client-server or dbf-based?

Ted Roche

Ted Roche & Associates, LLC

http://www.tedroche.com