Cannot see Win XP Prof client on Network?

I'm setting up a test LAN:

Server is Win 2003 Enterprise
Client/workstation is Win XP Prof.

When I first installed the server (and roles) and logged on using the
workstation, I found every thing ok. I could see the computers (server and
workstation) under My Network Places - on both systems.

Now, I set up a new DHCP scope and cannot see the systems, even though the
workstation logs on ok and gets authenticated.

Any thoughts?

By the way I do have a Netopia 4622 T1 router connected to the switch, that
I have not setup yet - is that a problem?

can they ping each other by ip? if yes, can they ping by name?

--
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Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN, Anti-Virus, Tips & Troubleshooting on
http://www.ChicagoTech.net
Networking Solutions, http://www.chicagotech.net/networksolutions.htm
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VPN Troubleshooting, http://www.chicagotech.net/vpn.htm
This posting is provided "AS IS" with no warranties.
"John Leonard - Sage" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> I'm setting up a test LAN:
>
> Server is Win 2003 Enterprise
> Client/workstation is Win XP Prof.
>
> When I first installed the server (and roles) and logged on using the
> workstation, I found every thing ok. I could see the computers (server and
> workstation) under My Network Places - on both systems.
>
> Now, I set up a new DHCP scope and cannot see the systems, even though the
> workstation logs on ok and gets authenticated.
>
> Any thoughts?
>
> By the way I do have a Netopia 4622 T1 router connected to the switch,
> that I have not setup yet - is that a problem?
>

Found my problem - thanks for the reply.
"Robert L [MS-MVP]" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> can they ping each other by ip? if yes, can they ping by name?
>
> --
> For more and other information, go to http://www.ChicagoTech.net
>
> Don't send e-mail or reply to me except you need consulting services.
> Posting on MS newsgroup will benefit all readers and you may get more
> help.
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN, Anti-Virus, Tips & Troubleshooting on
> http://www.ChicagoTech.net
> Networking Solutions, http://www.chicagotech.net/networksolutions.htm
> VPN Solutions, http://www.chicagotech.net/vpnsolutions.htm
> VPN Process and Error Analysis,
> http://www.chicagotech.net/VPN%20process.htm
> VPN Troubleshooting, http://www.chicagotech.net/vpn.htm
> This posting is provided "AS IS" with no warranties.
> "John Leonard - Sage" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> I'm setting up a test LAN:
>>
>> Server is Win 2003 Enterprise
>> Client/workstation is Win XP Prof.
>>
>> When I first installed the server (and roles) and logged on using the
>> workstation, I found every thing ok. I could see the computers (server
>> and workstation) under My Network Places - on both systems.
>>
>> Now, I set up a new DHCP scope and cannot see the systems, even though
>> the workstation logs on ok and gets authenticated.
>>
>> Any thoughts?
>>
>> By the way I do have a Netopia 4622 T1 router connected to the switch,
>> that I have not setup yet - is that a problem?
>>
>
>