Custom Admin/Frontend modules

I need to create two Backend reporting modules. Both are quite simple concepts. First I have already created the database tables for both modules with the values already stored. I know need to create a frontend form with a dropdown select that will show the values stored in the DB table. When the form is submitted I need to the values to be posted to an additional column in the Sales_Order_Grid. Second This form is for Sales_Order_View page. I need to add a new tab under "transactions" with two dropdown selects and a two column grid. The first dropdown echoes the name of the logged in Admin and the second echoes the Values already added to the DB I have created. I need to be able to select and save to the Grid and a NEW Grid called 'Call Log' this will be a record of all the values of the submitted by Admins and should have date range option and export to CSV, Excel etc Let me know if you need more info.