To see what IP address, default gateway, and subnet mask your computer is using:

1. Click the Start button and select Programs.
   
   
2. Select Command Prompt (NT) or Accessories, then Command Prompt (2000, XP, Vista).
   
   
3. At the command prompt, enter:

     ipconfig

4. To close the command prompt, enter:

     exit

For other IP information on Windows NT, including the physical address, at the command prompt, enter:

  ipconfig /all | more

This will give you information regarding your computer's TCP/IP setup, including:

  Host name
  DNS servers
  Physical address
  IP address
  Subnet mask
  Default gateway
  WINS servers