Hi,
I tried also to install internet security 7 today and paid 29.98 for that...
But same problem : firewall not installed because "unable to install firewall driver". I tried the above procedure, uninstall in safe mode etc... same result, so I'm left with no protection ! (windows XP sp3 as well)
I'm really angry to lose a lot of time with this problem after having paid for an unwanted new program. Any quick fix solution ? I've been for many years with avast, hope I will be able to keep on with it .
Thank you