Ken,
When you say multi-line are you wanting a drop down list of the items? If so you can just populate the list and keep the formula the same just make sure that what you reference in the multi-line text is formatted exactly like the iLogic rule.
To make a form just simply create a new form under the form tab and drag the parameters from the left hand browser bar to the place you want on the form. To edit the way the form looks you can then select the parameter and change its properties in the bottom dialogue box.
also when you say you want to limit the choices based on the specifications parameter can you explain further or post a small diagram of the selections filters. This will just require a slightly different approach to the basic iLogic and have the iLogic populating the multi-value text box instead of simply selecting the text from a prefilled box.
Regards Rodney
