I've installed a game (Toonstruck) without any problems in DOSBox 0.61. But when I try to run the game, it says that D: isn't a my CD ROM drive.

You may need to reinstall or or edit 'TOONSTRK.CFG' to set 'CD = ?:\' where ? is the letter of your CD-ROM drive.

Is there a way to edit a file (TOONSTRK.CFG in this case) from within DOSbox?

any help is greatly appreciated.