>>>So my question is simple. I have to one computer and is connected to the internet by a router. My router is a dhcp server so i get and ip from him.For example i get 192.168.0.12. Me, i want to know my ip on the internet.So how can i do that . I want to make a little prog.
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>>>Thanks in advance !
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>>You do not have an IP on the internet... your router does. No one can get to your machine from the internet.
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>DHCP is a protocol that dynamically assigns IP numbers within a network. So the machine does have an IP number, but on restart, the number might very well change.

From what is being desribed, he does NOT have an IP that is visible on the inTERnet.