Workflow vs. SAP Portal

[Claus Eskildsen]

Hi group
 
Assume following scenario:
Workflow runtime is based on WAS 6.20
Decisions boxes and input forms should be received as tasks via portal UWL -
users do not login to WAS via Gui
No business transactions to be executed in WAS - only used for workflow
runtime system.
 
Questions:
Do all users have to be created on WAS to receive tasks in UWL?
How should the scenario be realized today on WAS 6.20?
Can it be done without ITS/Web Transactions - how?
 
Thanks
Claus