Fudd--
On the 25 pin connector setup You can jump 4,5,6,8,& 20 if you want to but its not mandatory. If your using 9pin to 25 pin set up then follow this:
9 PIN -------- 25 PIN
1-----------------8
2-----------------2
3-----------------3
4-----------------20
5-----------------7
6-----------------6
7-----------------4
8-----------------5
9-----------------22
Remember that transmit must connect to recieve.
Neal |