Help needed - selecting email app for forms distribution...

Hello AU community,
I am in Mac OS 10.6.8 on a MAcBook Pro and using Acrobat Pro 9.4.5 and have made a fillable form and want to email it out and colelct responses. I see the different options and would like to use the email method. One problem I am having is that Acrobat is trying to use Mail but I already have selected Entourage as my default email program for other apps and have already gone into Mail previously and changed the prefered email app to entourage from within Mail, and yes my whole system as well as Adobe Acrobat and Mail and Entourage have all been restarted since those changes were applied. Yet Acrobat keeps trying to use Mail instead of Entourage, which is a problem because I have all my contacts (i.e. the ones I want to distribute the fillable form to) in Entourage.
 
So how do I make Acrobat use Entourage? All other programs (“mailto” links from within Safari, Word, Excel, etc., for example) all correctly trigger Entourage, but Acrobat Pro is not with the forms distribution email option.
 
Any ideas?
 
Thanks,
Lee