Everything is done over the network so no need to have it plugged directly into the PC - probably part of why the screen updates for the MFD's aren't the fastest in the world.
As for stand, this is what I have:
http://www.amazon.com/Arkon-Portable-Fo ... 639&sr=1-1
The Touch-IR+ software was $4.99 and there is an autohotkey in app purchase for $1.99 that you have to buy. The desktop software piece is a free download.
You also need to set up static MFCD displays that aren't moving around with your in game view constantly if you want to see them update on the Ipad. It's not at all mandatory, but helps for navigating the menus. They can be set up somewhere either on your main display, or on a secondary - though you don't need to see it displaying all the time. This works out for me, because I can technically plug my computer into a second display and extend my screen without actually having the other screen to use. The screen grabber app for grabbing the MFCD's, and A-10C always do their thing on the second screen, even if I can't see it and it just shows up on the iPad. Custom monitor setups are actually pretty easy to make and there is a sticky post on the Eagle Dynamics Forums describing the process of creating the lua files.
The guy that created the setup for A-10C using the Touch-IR software has his free download. It includes a keyboard layout for DCS A-10c with all the key mappings required and some profiles for Touch IR+ with all the static page layouts and goodies you need to get it working.
These three pages have pretty much everything you need to set up:
http://forums.eagle.ru/showthread.php?t=60815
http://www.touch-ir.com/
http://www.ipadpit.nl/