Constantly acquiring network address, ip address is 0.0.0.0

Trying to set up new modem for existing Verizon DSL client.  The icon in the system tray shows the network connection is constantly acquiring the network address.  The IP address shows as all zeros.  When I try to repair, it immediately returns that it cannot assign an IP address.  I have replaced the NIC but same results.  I have used WinsockXP but no change.  I have run the following commands in the run dialogue box:  netsh int ip reset resetlog.txt and netsh int ip reset c:\resetlog.txt, and also netsh winsock reset catalog.  I was able to set up the account and modem using my laptop, and I can also access the internet via the wireless connection, so I know it's not the DSL modem or the Verizon account.  When I try to run the installation CD it says it can't communicate with the modem, and takes me thru troubleshooting with no luck.  I cannot access the modem from the problem computer using 192.168.1.1.  Modem is a Westell 327 Versalink.   Help!
jimbluntAsked:
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and235100Commented:
Have you checked out Device Manager?
(start, run, type devmgmt.msc <hit enter>)
There might be an issue with the driver installation on this computer - are there any yellow ? or ! showing in the list? Does the modem show in the list as installed?
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jimbluntAuthor Commented:
Device manager shows everything normal.  No ? or !.  Modem is connected by ethernet and does not show up in device manager.
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jimbluntAuthor Commented:
When I try ipconfig /release and /renew, it says an error occurred and the RPC server is unavailable.
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and235100Commented:
Ah - okay - "DSL modem", then...
Is there a firewall installed/switched on - either Windows Firewall or a third-party offering?
Have you tried settting a static IP address - does that help at all?
One other thing - have you tried connecting up using another account on this computer?
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and235100Commented:
Can you check that the DHCP Client service is started, and set to automatic?
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jimbluntAuthor Commented:
Bingo!  Thanks so much!
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and235100Commented:
Glad you got it sorted.
Thank you.
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