Give the MAC/IP address, can the location of the machine be tracked?

theoretically
http://whois.net/
you will get the ISP, if it's a corporate network it will be quiet precise, if it's a normal consumer ISP you will get a region, and perhaps a mail to an admin that you can contact.

is it because you are looking for a stolen machine ?

go to

http://whatismyipaddress.com/ip-lookup

Don;t forget that the ip address changes as you move around..

I don't see anyway to find your MAC address though.

google "find computer via MAC address"