Hi
Tom,
If you have a Basic/Business Plan you should find your IP Address by logging into your cPanel and looking at the upper left side of the screen. It should be listed there.
For the MX/CNAME changes, what you would need to do is set the NameServers to point to our servers and then email
support@lunarpages.com to have us set up the needed MX/CNAME records on your account.