I just took over an existing company that had SBS 2003 with Exchange 2003. Well with the new management and company name came a new domain. Is there any way I can (1) change domains without loss of settings, users, etc. and (2) keep the old domain's incoming mails?

Thanks for any advice!
Cal

Do you mean Windows Domain or Email domain?
You can easily change the Windows Domain name in Windows 2003 using tools provided. E-mail means a lot of changes and will mean a lot of disruption for the company before it'll work...

See
http://support.microsoft.com/default.aspx?scid=kb;en-us;842116