Thanks Jep -- I created a CNAME for http://mkto-h0101.com/ ... When I open either that link, or the CNAME, I get just a blank page. Can I assume that it is setup correctly as I don't get an error from either? i don't wnat to screw up my tracking. 🙂 I'd rather have correct, unbranded, tracking than errors.
@Marcus - You need to contact your IT department. Whoever's responsible for your website's DNS settings, they'll be able to add a CNAME in 30 seconds.