I currently have about 200 users fill in online reports by having them click
an Excel 2003 attachment in an e-mail or calendar entry.  This executes a
macro that, among other steps, asks for their employee number which is
actually their Alias in their Outlook properties, as each user has their
individual report file different from all the other users (i.e. everyone in
this organization has two e-mail addresses: the usual name@company.com and
the Alias: employee-number@server.com)

Ideally I would like to have the Excel Macro obtain that Alias info
automatically without the user having to enter it as this will speed up the
process and avoid 'subscript out of range' errors or postings to the
incorrect report.

Can this be done?