blimy thats a lot of information since I posted that, many thanks for all the info. I found ambient was tempted but its $100 for the internet version which is somewhat pricey.
Sandaysoft cumulas sounds good pity I had not heard that the PC interface on my la crosse was rubbish before I bought it !! Could give it a blast I suppose.
The WUHU one is interesting but it appears to need the heavyweather beta 2 software which may or may not be crashing my PC. Interesting info at the bottom of this page
http://home.comcast.net/~wuhu_software/ it says about cheap serial to USB adaptors. The one I have came with the unit so I can only guess its good.
My PC does not have a serial port its an asus P8Z77-V-LX but I think I may be able to buy one and add it directly onto the mobo as there is a com1 input.
It is strange that this weather station is compatible with all OS up to Vista I think it may be a 64bit issue rather than a vista windows 7 or 8 issue although vista did also come in a 64 bit version it was not the norm. So therefore I feel it would point towards an incompatible driver rather than software.
Anyone know is heavyweather 64bit compatible?
A lot more work needed that with 2 young kids is not easy to get the time to do the research. Many thanks again one and all.
David