Yes, what mode are you choosing?
Try 7 instead of 8-A.

I have tried all the mods.

Use a CVS build of DOSBox with machine=svga_et4000, and the 1024x768 256-color (option A) mode works if you select the Tseng ET-4000 chipset (sub option 1). I tried this with the shareware 2.0 version; however, if plain 640x480 16-color mode isn't working for you, maybe you could try another version of the game.

Tried all that as well, thank you. Doesn't work!

Try shareware version 2.0 from here

Mode 7 works with DOSBox 0.72, and mode A works with a CVS build as I described. If you aren't already doing so, use all default settings in DOSBox. It's working for me; if it's not working for you, then provide more information about the version of DOSBox you're using, your OS, and the steps you're going through to run the game (including all commands in DOSBox).

I have 0.72 CVS 09/28/2008 build on Windows XP (Professional service pack 2 version 2002). I have also tried the standard 0.72 Dosbox. I am mounting the directory (mount c c:\unforgiv), then I am typing c:\unforgiv and the video mods screen appears. Then:

1) if I press 1-7 or B, the Z:\> line appears again and the window name changes from Unforgiv to Dosbox.

2) If I press 8-a, then the chipset selection menu appears. If I try to select one - see above.

3) If I press C or D, the warning about the card appears. If I try to continue - see above.

You need to change your default drive after the mount command:

C:<enter>
UNFORGIV<enter>

You're leaving the default drive as Z: and running the executable through a full path, which is not good practice.

And even if this game works with it's folder mounted as root, some games will object to it, so it's not good practice. You should make a folder like "dosgames" with the game folders beneath it. Then you would:

MOUNT C C:\DOSGAMES
C:
CD UNFORGIV
UNFORGIV

That is a best practices method for running most games in DOSBox.

Damn! Works now!. Thanks a lot.