AJAX Enabled Controls

Skills :- ASP.Net, VB.Net or C#.Net, AJAX, Javascript Database :- Use sample database - Pubs or Northwind of SQL Server 2005 Two Task to do :- Task 1 :- AJAX Enabled - Multicolumn Dropdownlist box. [Please Note :-? I dont want any Thirdparty Controls like Infragistics - WebCombo or Rad Controls or EO Controls etc..!] This AJAX enabled Multicolumn Dropdownlist box should be editable. Task 2 :- AJAX Enabled - Grid View with Pop Up window. Grid View should have Insert, Update, Delete Functionality. Insertion should take place directly to the database. [Assumption] :- Gridview has? 3 Columns Column1 :- Multicolumn Dropdownlist Box Column 2 :- TextBox - Readonly = True [NON EDITABLE] - On mouse Over - Popup window should show brief message - which is fetching from Database Example :- On moving to the City Column & Value is Newyork - Popup window should display a small message - fetching from database showing Newyork Financial Capital of US etc ..! Column? 3 :- TextBox - Readonly = True? [NON EDITABLE] Objective :- I have to implement the AJAX Enabled Multi Column Dropdown List Box inside the GridView. Delivery :- Need two different controls. Please test with all Positive & Negative Scenarios. Error Handling / Validation Handling has to be taken place. As i am working on crucial project delivery, I am looking for ASP.Net Experts to handle this assignment.