Bushman thanks for the reply but not sure if this what I'm after... I thought it was another program that will allow me to run a 3rd party software as when trying to run it I am getting a
Error -32701 while trying to initialise the station message.
Johnd I want to run software called Cumulus which should run ok but reading the manual for weatherlink I misunderstood the part about emulating a serial port and selected USB, and that the datalogger is given a unique serial number once you select this and I thought the program I should have been looking for cured this mistake feeling totally confused

it looks like I am not going to be able to use this software.
IT WORKS!!!!!! I never spotted the auto-detect in weatherlink ran that and it found port 5, the software I use suddendly burst into life once I entered that port number
Many thanks for you help, I found the software on the disc it needs the dll file to go with it otherwise it would not run, run the CP210X program went into the comms selected serial and did an auto detect and it works...
Phew was I glad...