ok ive managed to sort the above problem, after manually removing avasts left overs within the registry (thats after uninstalling and running the removal tools) i was able to install Avast version 8 and before rebooting, i was able to modify the data string to look like this:-

“C:\Program Files\AVAST Software\Avast\avastUI.exe /nogui”

and hey presto no more UAC issues, its seems the 2014 version really isn’t rdy to be let wild.