Change the server name into SQL 7

Dear friends, i have a windows NT 4.0 SP6 with a SQL 7
running an application, i need to change the name of the
server an take it to other domain, how can i do this?,
second, has it a problem if y try this?.
(i am calling the aplication provider to resolve this
issue but i need to know if the SQL hangs or has a problem
if i do this)

Regards

Diego Adrian