how do i go about it
 

ok my site www.sats-general.com now what i want to do is stay with my current host,but i want to change the name of my url and site name,how do i go about registering the new domain name and redirecting my current site to the new URL without making changes to how my forum runs,in other words is it simple to do without stuffing things up any help and advise appreciated

First register your new domain name at a registar such as GoDaddy or NameCheap etc.

Then assign the new domain the name servers from your hosting company. To reduce any downtime, give it 3 days before you do any thing further to allow for DNS propagation.

Then move everything from your old sites folders into your new sites folders using the same exact directory structure. Then you'll probably need to upload the tools.php file into your admincp directory, change the URL settings and cookie settings, then remove the tools.php

then use a 301 redirect to redirect all people visiting sats-general.com to the new url