Custom Drupal module development

We are seeking help in developing custom module or adding functionality to Node Relativity ([login to view URL]) module. Module should enable this: 1) Create node type A 2) Create node type B 3) Set relativity between types A and B 4) When now viewing node of type A (let's call it Na), user (with rights) should be able to see list of nodes of type B and connect N of these 5) Picking should be done one by one, and when user picks the latter node for the relation, he should be able to define additional data (= date+time) for the relation. Node Relativity module does some of this, but there is no way of adding data to relation. If Node Relativity module is used, it should be finished for Drupal 6. Data about date+time should be usable in Views. In other words (just trying to make certain this description is clear): If there is defined possibility for relation from content type A to content type B, when viewing node Na, one should be able to see link (or button) that leads to list of nodes of type B and be able to pick those to which relation will be established. Picking should be done one by one, and when user picks node of type B for relation, he should be able to define additional data (= date+time) for the relation. The best way to implement this would probably be to add the functionality to Node Relativity module, as this would mean that other features of the module would be there already, like ability to integrate with Views. For example, we would need to make View that lists all nodes of type B that are in relation to named node of type A and sort the view by date+time. Please describe roughly (with pm) how you are going to implement the functionality - this will show us that you understand the requirements and drupal architecture. The code will be contributed to [login to view URL] (with your name or nick in it, if you want to).