please post product suggestions here:
http://www.webassist.com/community/feedback/dashboard.php
I have not tried using Image slices in Power Messenger, I cant say for sure.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.