Jux,
Thanks for your comments, i will check why it opens IE after installing - it should launch the instructions web page in the default browser.
We put the advice about firewalls etc in to reduce the chances of the installation being interfered with. When installing, i'm surprised more anti-spyware systems don't recognise it as spyware - since the technology is exactly that - in a nice way
The only known issue we have had of anti-spyware conflicting so far has been Virgin Media's Home Protect system. The install works fine if you turn this off temporarily as asked.