We've got a Drupal site on which users maintain notes on product development projects, leave comments, etc. and the user base would like to add milestones to function in a similar way that comments function (many milestones for any given project). We have CCK and Views primarily driving the function of the site but can't seem to figure out how to implement a "one project - many milestone" one-to-many relationship.

We are NOT using the project module as this seems to be designed mostly for software development - we are developing material-based products.

Any ideas out there? Anyone done something similar?

Bob