Outlook is on "computer A", EMclient is on "computer B" - How to export/migrate ?

Can you import full Outlook accounts from a different computer? … perhaps by installing EM on that computer then migrating to the second computer?

you can export whole account to PST file, transfer it to “computer B” and then use Import from Outlook (PST), or you can do it as you have described. Install eM Client on “computer A”, import your account(s) and then copy the database to comp B. Database is located here: C:\Users%Current User%\AppData\Roaming\eM Client (Vista/Win7) or
C:\Documents and Settings%Current User%\Application Data\eM Client (XP)