Thanks Supercabby, I'll give it a go. Actually I tried it yesterday but when I realized it was going to take hours I moved my laptop out of the way, plugged into another socket and then forgot to switch on the socket. Doh!!! Sop my laptop ran on battery and, after 2 hours, it died. I got discouraged and just tried the quick scan.
MODIFY: Oh well, 3 hours later and the full scan is completed but no malicous objects found. CouponDD still there.