For those interested in playing PAL DVDs (or possibly even other regions) through their Mintek DVD-1600 (the new one), there is a way I found to do that (at least, for my single Region 2 DVD). What I did was this:

Inserted PAL Region 2 DVD into tray.
As DVD was loading, I pressed the number of the track (1-9) I wished to began viewing with repeatedly, like crazy.
The "Wrong Region" message popped up and it played flawlessly.

Of course you can't access most functions through the remote but it plays nonetheless.
Anybody else have any success with this method?