I wrote a program called LetterCam that is mainly used for generating DXF files and GCode for cutting out letters. I know you can use other software for this but I just wanted to write my own since I'm a programmer. It doesn't have all the bells and whistles that most software has but its easy to use with the basic features.
It should be available within a week. Since I want to cut letters I was gonna have to buy a TTFtoDXF program for $100 and then load the DXF into SheetCam since it was the only program that cuts the inside first. I'm a registered user of SheetCam anyways. LetterCam will cut the inside first also. You can set the cut depth, Z increment, X/Y offset for starting point and more.
Here is a screen shot below.
Warren