Updated DOSbox Guide

I have updated the DOSbox Guide recently. I also added several screenshots to clarify a few issues.

Additionally, you can download my own dosbox.conf now. It works in combination with the default MOO2 directory: C:\MPS\ORION2

When you use this configuration you need just to read steps 1-4 and 8. The steps 5-7 explain the changes of my dosbox.conf file.