How can I setup a domain so that it redirects to another address for example;
redirects to: http://www.longdifficult.com/to-remeber/address/1865622
It only needs to be within our network, but the site it redirects to is on the internet. The DNS server is on a Win 2003 Sp2 Maachine.
You need to look at your DNS server, and create a CNAME. The following URL should give you some more information on what is required and the purpose of a CNAME.
MICROSOFT KB
I can provide more indept instructions if required.
There are many ways to do http redirection, one of the easiest is to set up a web site whose sole purpose is to redirect to another URL. DNS doesn't do URL redirection - you can create a CNAME for itsupport.com to point to www.longdifficult.com - but it won't care about handling the rest of the difficult URL for you.
Simply set up a web site in IIS that responds to the itsupport.home host header (binding) and have that web site action be to redirect to another URL; the long and difficult one. Then if not already done, add the itsupport.home A Record to point to this IIS server's IP (or a CNAME to its host name) in your DNS system.