>I can retrieve a computers name, (see RE: Ipconfig? Ipaddress, subnet & Def' Gateway) is there any way that I can CHANGE the computers name ? For example is the computer name held as a registry key ? If so how do you change a registry key ?

FWIW do not change (especially if you're part of a domain, have IIS etc).
PS: I don't know how to change.
Cetin