Have you tried Magicall? I use it and its very versatile. Works great on my Mogul.
http://www.mobiion.com/magicall-more.html Features:
Supports PocketPC Phone
Supports Smartphone
Dual-way calls filtering
Automatically uses calling card
SMS messages filtering
Password protection
Filters by numbers
Filters by contact/non-contact
Filters by Outlook Categories
Filters by SMS contents
Reply SMS to caller
Multi-language user interface