Setting up DNS A record for a domain

[Jeff Stevens]

I was working on a question about how to setup A records for a browser 
and I have another question about defining A records as a result.  Say 
your want to resolve to a domain host for web browsers, so you have this 
configuration:

   realwebserver.mycompany.com. IN A 192.168.1.1
   www.mycompany.com.  IN CNAME realwebserver.mycompany.com.

What is the accepted configuration to make "mycompany.com" resolve as 
well?  Is it normally expected to resolve to www.mycompany.com?  Does it 
even make any sense to have it resolve to anything else?

Thank you...
-- 
Jeffrey Stevens