That sounds like the problem with IE also. Go to Start\Run and type MSCONFIG (or type it in the search box) Then click on the Startup Tab and uncheck the box for your Antivirus. This will stop it from starting when you turn your computer on. Download and install Flash. Then go back to MSCONFIG and put the tick back in the Antivirus box to start it again. Dont forget to do this. You may be as well turning your firewall off as well temporarily while you download Flash. Go to Control Panel \ Security settings to do this. Again ,remember to turn it back on.
I never got any help,and had to wait for answers,so I had to pay to have adobe installed.
Thanks for your help anyway