Using CCK to interface with other CMS databases

hi

I'm looking at using the CCK to interface with the db of another CMS (ActionApps).

I've studied the source and now am wondering what is the best way of doing this.

Basically, the other CMS uses numerous different field types (e.g. text field, date field). At the moment I'm considering 'subclassing' the equivalent field types in CCK and retrieving/storing values into the ActionApps DB instead of the Drupal DB.

I'm seriously new to Drupal development, hence I'm asking for comments on whether this is a good idea - or it's completely stupid.

Thanks,

mimo