How to implement a real seamless Windows RemoteApp access from local user's Windows session ?

[ohault]

Hello,

From the user's perspective, this should be entirely transparent.
The RemoteApp would see the C: drive as the local C: drive and the same for mapped drives, and the all the printers with the exact same view that the one from the user's Windows session/desktop.
All server disks, printers,... show be hidden and not accessible.

As far as I know, Remote Desktop Client already implements most of the required features to achieve this goal.
The main issues would be on the server side.

Could this be configured with specials scripts on current Windows "RDP" server implementation ?
Could this be implemented by writing some Windows drivers for the server side ?
Could another RDP server implementation could be a good starting point ?

Any others ideas (like network access tunneled back from the client device)?