multiple user accounts different email default settings

[rhubcowboy]

is there a way to have outlook the default email setting in one user account
with admin rights and have outlook express the default setting in another
user account with admin rights??? When I change one, both are affected. I
need both to have admin rights for quicken to work properly while fast
switching and accessing the same quicken data file. But when i try to send a
estimate or invoice within quicken it grabs the default email program. I use
outlook in the business user account and outlook express in the personal user
account. I'm trying to get invoices sent within quicken and business user
account to use outlook when logged as business user and all other email
issues when using personal user account to use outlook express. Have any
suggestions???