Hi Clay,
Thanks for your reply. At the moment I will approach it the following way:
The user will create the form B by a button click action while having form A open. At the click event I can call a web service and pass the ItemID of form A as parameter or the form itself, use the data from form A in the Web Service and create the new form B with these information by using the MOSS object Model.
Sounds simple but I am sure I will hit some walls.
Regards
Mario