Thanks for your quick response. Following your helpful instructions, I have now set Wireshare in 64 bit mode by deselecting the 32 bit mode and removed any control via my firewall for the moment until I have sorted the problem. I also downloaded Java 6 as you suggested.

Sadly nothing I have done allows the download from Wireshare to run.

You will have already guessed that I am not computer literate other than at a basic level.

I have double everything you suggested but without success.

Any other suggestions would be appreciated before I trash the lot!