The 192.168.x.x is a special block of IP address that is used by every wireless router as a means to extend the amount of IP4 addresses available before switching to IP6 addresses. This is more of a local IP address used for administration inside your personal network (i.e. setting up services for you and your family to use only inside your house). Your actual IP address is different and can be checked here:
Link
And yes you may use trainers on multiple computers as long as it is for your personal use only.
[Edited by Neo7, 4/6/2012 7:25:58 AM]
That was the answer I was looking for.
Thank you, yeah they are personal use ofcourse just did not want to be banned for using my own account for me on two different computers in my house you know.