MX RECORDS

Does anyone know how to set up MX records?

This is what i think is the way to do it

Example:

mx0.MyEmailServer.Domain.co.uk. 10

so..

"MyEmailServer" = The name of my computer that is going to recieve the emails

"Domain" = My Domian name i have choosen

"10" is the priority

If this is correct way that i am suppose to setup mx records then why cannot i recieve emails?

Im Running IIS 6.0 what do i have to chage in iis in order for this to work? (Smtp and pop is installed!)