That's a problem. Acrobat Uses the Windows MAPI service so that it's email client independant. When you install an email client it's hooked into MAPI. If you don't install an email client then Acrobat has nothing to talk to. You must install one, or submit to a web site.
Thom Parker
The source for PDF Scripting Info
www.pdfscripting.com
Very Important - How to Debug Your Script