Right Click Send To Mail recipient - Send button doesnt work

Usually this problem is fixed by setting Mail program as the default,
however when I try that on my Vista 64 Sony Viao, it wil not display the
custom or default settings, insrtead giving error 80070483

Ive looked that up and according to a MS author, that should go away by
closing the Microsoft app havings its setting displayed, but that does
not work for me.
Of interest is that this problem followed me from my WinXP Compaq over
the File and Settings transfer wizard


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sdyer