Articles' comments...

Hi everybody. My compliments for this huge project.
I'm Italian and i'm trying to convert my old CMS made with MDPRO, a Postnuke based portal.
In my old website i have a lot of articles inserted in different categories, and i tried to import them successfully in the new Dolphin database.
But I have also a lot of users' comments linked to them and i'd like to import them too... so... it does exist a plugin for comments to the articles?
And some modifications for the articles so i can manage them more freely?

Thanks a lot!

Bye!!!