VB/C/C# Video overlay and Audio capture

Hi, I have small project which I need some help with. I have a x86 PC with 4GB RAM and 1.2GHz processor running Windows Embedded Standard 7 which has a full HD USB web camera model HP-4110 attached. I need an application which can show the webcamera feed with full HD and 30 frames pr. seconds (which is within the specs of the camera) in full screen the resolution on the graphics card of the PC is also full HD via HDMI. I then need text overlay on top of the image (to make an onscreen menu etc...) So the requirements are - no lagging full screen HD image with overlayed text or images on top. The programming language can be either Visual Basic, C# or C. The program must be able to run on Windows Embedded Standard 7 operating system. I also need to be able to record an audio stream coming in on the sound cards line-in or microphone input (selectable) in standard WAVE format simultaniously with the image being previewed with text overlayed. (I do not need to store / record any video - just preview it) Once this has been acomplished I have more work pending for the same programmer as well so you must be willing to accept further work on this task (with following payments ofcause!) once of these further tasks is creation of a nice graphical users interface so I would need a programmer who can also make some nice graphics or knows someone which he can use to make them as a graphical users interface is also needed later on. Also please provide some references to your prior work and why you believe that you can acomplish this task.