Oh by the way guys... I did release a Hacker 3 for ShockArcade a while back.
If you want to attempt it too:
http://www.shockarcade.com/play/hacker-3
Hacker 1 has a built in walk through, but I assumed you would get the idea by Hacker 2 so you have to work that one out yourself (although the interface is different in number 2... more Windows 95-ish than DOS)