i got it

[funnyguy123]

nvm got it

 

[john-b691]

I am going to guess you mean you are attempting to change the IP you get from your ISP and not the IP your router give your PC.

Depends on the ISP some make a effort to always give you the same IP and others it seems to change all by itself sometimes. You could try to change the mac address on the wan interface on the router and see what happens. Tends to be a pain if you are doing it a lot.