The 44S ecu is a G1 based ECU so I have moved your post to the G1 section. You will find the manual for the PossumLink 44S in the section at the top labelled "G1 Manuals".
You will need to use PC Link V2.5 for this ECU.
Im pretty sure the G3 drivers should work ok with the Comlink so check in device manager that the comlink shows up under Ports - COM & LPT. Note from memory the Comlink must be assigned to comport COM1-9. If it is not looking happy in device manager then post back and I will find a driver that should work.
