thank god all gone now.
the virus is was called bugbear@mm this is a W.32trojan virus
thankyou nortons for deleting it for me.
how to check if you have this virus is
click start
click search
click find files or folders
then type in the empty box gig.exe and search
then try bugbear
if you have any showings with these searches you can clean this if you download tools from norton.com
:)