Anyone can hide their IP address legally through the use of anonymization tools such as Proxy servers or VPNs.
Static IP address
An ip grabber is a program that will find the ip address of another computer. Often used by hackers.
They can get it but IP's generally only give the general area not exact location.
Email hackers are generally tracked by Cyber crime police. They can track the IP address of the hacker. With the IP address, they can track the location of person.
You can change your Gmail address after you change your IP. You however do not need to do that. It is because gmail is independent of IP address.
Menu > Configure Device > I/O > Embedded JetDirect Menu > TCP/IP > Manual Settings > IP Address
There is no program to change your ip address. Your ip address is given to you by your internet service provider.
IP spoofing
change it.
It depends on how your computer gets its ip address. If you have a static ip address. The answer is no, your ip address does not change. If you have a DHCP server in your network mostly likely you will get another ip address when you change your computer. There are some tricks but it's a too long story.
Your IP address does not depend on your computer but upon your internet service provider. It dynamically changes on a regular basis. If you change your ISP, then your IP address would definitely change.
A dedicated IP address may come in two forms, static or dynamic. A static address doesn't change, while a dynamic IP address will change. To find your Internet Protocol address, try using the "What is my IP Address" website.