Oregon Scientific - WMR100 with a PCR800 rain gauge - problems

G,Day ,
I am operating Weather Display Version 10.37P-Build 22
I am using an Oregon Scientific WMR100 with a PCR800 rain gauge with several other temp. gauges and UV sensors.
I am using Windows XP Professional Service Pack 3 which has an operating system as follows;
Processor Name: Intel(R) Core™2 Quad CPU Q8200 @ 2.33GHz
Installed Memory: 3,318.17 MB
My problem is ;

  1. The main receiving unit every now and then loses contact with the rain gauge and all I get is _ _ _ on the
    main unit. I have tried three lots of different high strength batteries and it still loses contact now and then .
    I have tried all the re-setting procedures and it still loses contact now and then .
  2. Even when it is in contact with the rain gauge , the readings(even though correct) on the main unit are not
    being transferred across to the computer.
    For some reason the Data gatherer version 4.7 is picking up all other
    units except the rain gauge ??.
    Occasionally the data gatherer 4.7 picks up the rain gauge but does not transfer the data to the computer ??
    I am getting that frustrated I have nearly chucked the whole system out the door .
    It may be a simple solution but I am not overly technical .
    Please help if you can . Any help will be greatly appreciated
    Cheers,