Oh, your server is running Windows. I missed that. Windows RDP is actually far more bulletproof than VNC (IME) -- for seeing Windows on other
desktops (Windows, OS X and 'mainstream' Linux distros). There is an rdp client for android iirc.
Ubuntu over vnc is pretty usable, even on a 7" tablet (1280x800), but I'd rather use
JuiceSSH +
Hacker's Keyboard for configuring stuff, because it's basically a full-screen terminal, and the keyboard gives a Ctrl key and other essential functions lacking in the onboard android keyboard.
I was able to 'unlock' my tablet, but not root it and after further investigation decided it isn't worth the bother. I did install a better recovery mode than stock, "team win recovery project," which enables a number of advanced recovery, backup and restore functions, mounting volumes etc. Otherwise it's the same old, lame-ass tablet.
I can see if you are trying to get a really simple setup for non-technical users this is all a complete non-starter.