You can change the name of your computer easily. Under the Apple Menu, go to System Preferences, then Sharing. The name of your computer shows in the top field; you can change it to anything you want.

I think you will find this is done when the computer was installed i dont think you can change this without reinstalling the system. have u got start up disks, worth doing if you are the new owner any way n run

its like when u first put widows on it asks you for company name ha ha then it crashes

actionman