So, whilst shutting down unnecessary services I seem to have made a mistake and shut something down that is responsible for installation/internet access. No idea which one.

I can access the net but and I can make downloads - in this case Auslogics Disk Defrag from Cnet - but when I try to install the program the Cnet installer gives me an error saying that I have no internet access and should check my firewall.

I don't run a firewall beyond Window's own.

I am, sadly, still running XP Home.

I've tried restarting a few services but nothing yet.

Any ideas?

Thanks.