Converting Express to Outlook

[Henry W. Ince]

I currently use Outlook Express 6.00.2800.1123. I would like to convert my
muliple accounts (Express calls them Identities) to Outlook 2000 SP-3
(9.0.0.6627). I "imported" one account into Outlook (I still have Outlook
Express specified as my default e-mail server). But, I do not see any way to
"Switch Identities" or similar option to go from one to the other, if I do
the same for my other Express identities. How do I change from one "account"
in Outlook to another.

Thanks for any help.

Henry