I would like to get My ImageWriter II working with my Mac.  I don't have the cable, though.  I have a 25' MiniDIN8 cable I found at a surplus store.  If I chop it, and put DE9 connector on the end, what is the pinout?  Is it just a null-modem cable as detailed on the ADTPro website?  I would build as such:

DIN8 - DE9

5 - 3
3 - 2
4 - 5

8 GND
1 - 8
2 - 7 
GND 4
7 - 1

Is that good for the ImageWriter II?  Anyone know?  I don't want to harm the Mac.