Dynamic IP?

Hi, I'm running thru a router, I've might found a bug in a game trial that makes you able to play forever without paying for it, however i need to be able to change my IP to do this.

1.Do i have a Dynamic IP if i run thru a router?

2.If i don't have a Dynamic IP and try to change ip what will happen? Will anything happen?

3. If it works i will make a tutorial.

you should be able to change a specific comps ip on your router network via the computers command line
i think you might hafta reset your router or change the ip settings in it afterwards depending on the model and make

Aeight, well it didn't work, the hidden files is somearound hidden on the net and yorue own system, and i'm to lazy to find out where..