-----Original Message-----
You didn't say which version of Outlook you're using, but
if it is Outlook Express 6 this is how it works for me:
You have to set up an additional Identity, and also an
additional Account. Then you can simply switch between
Identities and send your messages and they will carry the
appropriate name/email address for that Identity. You can
switch back and forth at will.
In File-Identities-Add New Identity, enter the
appropriate details (have a look at the existing one first
if you're not sure what to put in).
In Tools-Accounts-Mail(tab), Add A New Account (again,
check the existing one for what to use except where you
are creating the new, different bits).
When all done and you want to switch between them: File-
Switch Identity, double-click on who you want to be. The
same to go back to the other one.
If you're using some other flavour of Outlook, all the above may be useless though!
.
Assuming all of your account settings are correct. You
can alternate which account you send mail from by clicking
on "File" in your new message toolbar....then click "Send
Using" ...the choices should appear