in the ABFindAll request, you get the cid of the user in the XML
<Contact> <contactInfo> <CID> cid goes here </CID> </contactInfo </Contact>
you change that cid from decimal into a hexadecimal value and it will give you the url....
Otherwise, you could just go to this URL and it will redirect you automatically : http://members.msn.com/default.msnw?mem=THE_EMAIL_ADDRESS@DOMAIN.COM&pgmarket=
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