.net File Asset Management

I need to this : its a Client Server Model. with a MS SQL SERVER in the back-end and desktop application in the client side on .net 4.0 + . Preferred Language VB.net. 1. User should be able to upload any file(pdf, cdr, ai, jpg, images or any format) from a desktop application interface to the attached server. 2. The Server should have a Service installed which will automatically create a thumbnail of that file and save it in the column and Move the original file to an external storage (network or Same HDD )or UNC Path with a link to that file. 3. When the User wants to View the file he should be able to simply hover the mouse over the grid or same as explorer and view the file thumbnail. 4. When the User wants to retrieve it again he will simply click on "Open File" button on the client system's desktop application interface to open it from that unc path. 5. This logic should be compatible with the Web Interface also.