I've done a system restore but this time I picked a much older restore point then last time. It seems to have resolved the internet problems and so far it is running faster then usual and I havn't seen the doublee-click.net thing yet(fingers crossed).
The only problem still remaining is my desktop items are all still disabled. The programmes themselves work if you open them through the start menu but nothing responds if you click on the desktop short cut and the icon for each one is just an image of a blank peice of paper.
I still have the combofix log. Do you want to see it?