To get to the command prompt in Windows XP, 2000 go to:
Start, Run and in the empty box type cmd and then hit the enter key.

If you do not have the RUN option please contact your network administrator.

Display connection configuration: ipconfig /all
Display DNS cache info configuration: ipconfig /displaydns
Clear DNS cache: ipconfig /flushdns
Release all IP address connections: ipconfig /release
Renew all IP address connections: ipconfig /renew
Re-register the DNS connections: ipconfig /registerdns
Display DCHP class information: ipconfig /showclassid
Change/Modify DHCP class ID: ipconfig /setclassid
Network connections: control netconnections
Network setup wizard: netsetup.cpl
Test connectivity: ping
Trace IP address route: tracert
Displays the TCP/IP protocol sessions: netstat
Display local route: route
Display resolved MAC addresses: arp
Display name of computer currently on: hostname

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