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I think somone has posted code to do this somewhere on this bored. I think you use GetHostByName wich returns a structure wich contrains the IP.

The problem is that I DON?T have an address after 1 hour.

I have a 10 Mbit/s connection and the ISP provides dynamic addresses, that means that everytime I turn on the computer I get a new address.
Normally that address is legal until I turn off the computer or I diconnect the network card.
But now there is some problem with a server that handles the addresses I think, so after 1 hour I get disconnected.

With the program winipcfg.exe (Win98), there is some information about the network, like address and more.
There you can press Update (or Renew, I have other language than English), then a new address is recieved.
Maybe that depends on the ISP and connection type, I haven?t tested with a modem.

Instead of manually disconnect or use winipcfg.exe I wan?t to write a program that handles that for me (I am tired of beeing interupted when I?m surfing).

Thanks

Great, problem solved.
Both ipconfig.exe and winipcfg.exe handles /renew_all so calling them is super.
But super super would be to know exactly how they do it.

Study the DHCP protocol man! ;)

Latigo