I saw someone ask for this in a thread yesterday but the thread sort of disappeared so im going to post it here
code:
function msnID(email)
{
var msnID = 0;
email = email.toLowerCase();
for(i = 0; i < email.length; i++){
msnID = msnID * 101 + email.charCodeAt(i);
msnID = msnID - Math.floor(msnID / 4294967296) * 4294967296;
}
return msnID;
}
Hope it helps someone