Gosh sorry Bob -Sorry everyone. HOpe no one was rash enough to click on it.

I can see now that I will almost certainly have to reformat the drive.

In my BitDefender Firewall have just set the following rule

Path: c:\program files\internet explorer\iexplore.exe
Any command line
Deny access

Yes I can still use IE to access the web!

I guess my concerns now are more these:

Where else might this malware reside?
Is my external HDD, on which my data is backed up, also infected?
After a Windows reinstall is there still a risk that the malware will have survived?

Thanks everyone

Marc