Windows Mail->Tools->Accounts->Highlight your account
then click Properties->Servers Tab.
Your username is there and your password is there. To
see your hidden password, download and install a
program like Mail PassView. You don't need to open WM
to use it.
'Mail PassView Freeware download and review - view email account
information from SnapFiles' (
http://www.snapfiles.com/get/mailpass.html)