There are a couple of things that may help you out.
First, find the shortcut to Enterprise Manager and check the properties. The target should be something like C:\WINDOWS\system32\mmc.exe /s "C:\Program Files\Microsoft SQL Server\80\Tools\BINN\SQL Server Enterprise Manager.MSC". Change the /s to a /a (author mode) and apply.
Now open SEM using that shortcut and set the views the way you want throughout. When finished, exit SEM and reply 'Yes' to save the console settings. You can then reset the target string by changing the /a back to a /s. SEM should now retain the settings as you had set them before saving in author mode.
The other tip you may find useful is to choose Tools/Options and on the Advanced tab check the box for "Open the console tree to the last active node" if you want SEM to open the tree where you left it last time you exited.
Lloyd Freiday