Module tablemanager - add 2 more field types

Hello. the things are simple.
We are using already the Drupal system and there is already a module named tablemanager wich covers 99% of our needs. downloadable on http://drupal.org/project/tablemanager at "view all releases" - version 6**** dev
Please image urself this situation:
Client X demands in our website that an action to be made by us (for example call 6 people) for that we will have a table with rows of such demands, managed with the tablemanager module.

Columns that we need are:
1. id (automatically added, autoincrement) - to implement its display
2. client (a userlist dropdown from a specific drupal group ex id 5)
3. demand (a simple text box where he demands what he needs)
4. assigned person (a userlist dropdown from a specific drupal group ex id6-staff)
5. procent progress of the task.
6. extra details (simple text)
7. added-by (author of the row)

almoust everything that you see here is managed already by that module. BUT it does manage atm only 7 field types: numbers,email,url,text,choices(dropdown) and the graphic bar procent)

what we need to do is: to add 2 more types of validations. 1. the userlist dropdown and 2. the username who created the row data
the userlist dropdown In drupal is simple api call for a specific group. also for the username to display, it is already stored in tablemanager_data at collumd uid ( $user->uid ) .. we need his $user->name)

there is just few lines of codes, for someone who knows drupal's basic api should be very easy to do it. and i am ok for having the results of this work public on the tablemanager project page.
thank you for a fast replay with ur price. Ciprian Oancia

Btw, there is a similar amazing module wich i am curently forced to use, its named dynamicdata and it can be found on xaraya cms. it can browse any db and create a form or display any sql in order to update it, to add more collumns and also a much more advanced user type fields and user data source.
I would be happly give a donation to someone who could port it to Drupal, it will boost drupal a lot.

thx