You forgot to specify D drive as CD-ROM drive.

And besides you probably don't want to run the game directly from cd, but from the folder you installed it into (C drive).

mount C "c:\Documents and Settings\win\Mes documents\DOSBOX Stuff"
mount D "c:\tanks" -t cdrom
c:
cd tanks
tanks.exe

Assuming c:\Documents and Settings\win\Mes documents\DOSBOX Stuff is where you will install all your DOSBox stuff -> C: Drive

Assuming c:\tanks contains all files from cd-rom.

Assuming you have the game already installed to C:\TANKS (DOSBox see it that way, real path is c:\Documents and Settings\win\Mes documents\DOSBOX Stuff\tanks

The real C:\TANKS path is seen by DOSBox as D drive (CD-ROM, we mounted it that way, remember?)

Well, keep asking if you don't understand something but read the readme file that came with DOSBox first and the GUIDES section on this forum should prove useful too.

If you are still stuck, you should consider using a Front-End.

I dont need a cd because the legal v1.3 Tanks install file can be downloaded from the net.

So, is the following correct ?

I install the game in the directory:
C:\Documents and Settings\win\Mes documents\DOSBOX Stuff
Thus creating the sub directory:
C:\Documents and Settings\win\Mes documents\DOSBOX Stuff\Tanks

Then in the dosbox.conf file, section autoexec:
mount C "c:\Documents and Settings\win\Mes documents\DOSBOX Stuff"
c:
cd Tanks
Tanks.exe

Is this correct ?

Yes, provided the game doesn't need a cd-rom.

Then I have exactly the same error messages...

"Mel Fatal error #26 trap#15
Mel Real Mode version 2.2.5 4/2/94"

Configure the sound correctly.

I configured as 'no sound'. The error message is the same.

Be sure the setting is saved. The game works fine with just a default
dosbox installation and the sound of the game configured correctly.

The sound.cfg is updated (date and time). What does the error message mean ?

Dunno, i only get it if i forcefully configure the sound with settings
that are incompatible with dosbox. That is running the installer
under plain XP resulting in irq5 usage.

All right ! I had run sinstall under plain XP, before launching DosBox.

Now it works !
One more question: how do you get a full screen windows ?

Easiest: readme
A tad harder: alt-enter

I found another solution: fullscreen=true !

That's the hard one 😀

Thx for your help ! Even the sound seems willing to work ! 😊