If you just got a brand new Windows 8 tablet and disheartened to find out that none of your favourite DOSBox games from GOG worked, like I was, then here's something that *might* help you: http://www.youtube.com/watch?v=cqzKe7APHKI
And you can find the zip & instructions here: https://www.dropbox.com/sh/7hdpqzi9qhs15aa/3E7wqVRJ5i
Basically it lets you play mouse-controlled DOSBox games on a touch-only device without any external mouse plugged in.
I made it primarily for my own private use, so please don't expect fantastic support (the source code is also in the same dropbox folder if you'd like to solve any problems on your own). I only have one Windows 8 tablet device to test (Venue 8 Pro) so I have no idea if it works properly or not on other machines.
I hope somebody finds this useful. Happy gaming!
Thanks so much, dude. This is just what I was looking for. You're a national hero.