It sounds like your PC is using a different IP address range. Your router is 10.0.0.2 but what is the PC using? If it's the default Windows XP "local" address, it will be 192.168.x.x and that won't be able to see a 10.x.x.x IP address.
To check what your PC is using, go to a command prompt (Start > Run > type
cmd, click OK) and, at the command prompt, type
ipconfig /all - this will tell you the IP address that you're using. If it's not a compatible 10.x.x.x address, go into the TCP/IP properties of your network connection and manually set the IP address to
10.0.0.3.
Also, if your router can act as a DHCP server (most new ones do), switch this function on once you've made a connection because you might find that the ADSL modem needs the router to assign it a suitable IP address. Once you've done that, you can set the PC's TCP/IP configuration back to 'DHCP enabled'.
Let us know if that helps
