Guys
Port assignments and IRQs differ from one laptop to another. Generally speaking, your COM port is configured by your O/S to run smoothly without you needing to do any changes. If the COM port doesn't work for some reason, you may need to check it in the BIOS and see if its enabled or set to automatic IRQ assignment. Again, this is PC/Laptop/BIOS based and differs. However
If you set the DSR software to COM1 then the cabling from the unit to the PC should be to COM1 and not COM2. If that doesn't work, make sure that
1. You are connecting the cable to COM1 on the PC
2. COM 1 is fully functional and not dissabled (either in Control Panel - System Properties) or BIOS
3. That the RS232 slot of teh reciever is working. There has been cases of faulty RS232 slots on the Technosat and if that is the case, you will need to have it checked by a technician.
You have to try and eliminate the possibilities, but the software works just fine.