keep in mind that gmail and MSN (passport.net) services have nothing to do with each other, you have to register a www.passport.net account using you gmail direction to be able to use it in MSN, remember that they DON'T HAVE to have the same password as they are completely independent.
If you already have registered a passport.net account using your gmail mail, please, check that the pasword is the correct one.
/ 
