Update'
Finally managed to rid my machine of this virus. I let the virus scanner Identify the infected file. I then took a note of it, rebooted into Safe mode, found the file and manually deleted it. I then re-run the Fix/removal tool in both safe and normal mode. I then run the Norton Virus Scanner in both safe and normal mode ( no more virus detected). I,m not really sure what the file ideleted did, but it was infected, could not be repaired, and so had to go. I think my machine is working ok, still only time will tell.What a day this has been!