Here's a thought...

Maybe it's not a CD so you don't need to mount a CD drive?
From the word "downloaded" I can safely make the assumption that if the game did come on a CD, it was probably ripped, and thus you should probably go to the Abandonia forums and ask them on how they got it to run.

hmm, i'll look, god your smart

Googling can also help.

This was a shareware game that was made freeware by the designers, it doesn't come on a CD, just shove the directory on a mounted C: drive in dosbox and run Aleshar.exe.

There are some graphical issues, but other than that game runs fine at 12,000 cycles.

And I'm not smart, I'm just not lazy and expect others to solve my problems.

Graphical issues, and problems with the GUS emulation in DOSBox 0.70.

Hmmm, even with your config I still get some graphical glitches on the game intro.
Nothing major though, the text is still readable and the game itself seems to play fine...

It wasn't meant as a fix for anything. Just how I have set it up.