Is there anything you can do with somebody's IP address?
You can
try to ping them, or trace root the IP.
Will tell you if there is a computer at that address and how many milliseconds it takes for packets to transfer between them.
or
- tracert randomdomainname.tld
Will tell you the names of the computers/servers a packet travels through to get to the specified location. These days, however, most firewalls are stealthed to both pings and trace roots.
The WinXP command prompt pales to the old DOS prompts (and both are egregious if you're used to unix-derived shells). You'd have a lot more cool toys if you were to install and use
Cygwin or another terminal emulator.