Thanks, Fink.
I'll print the instructions you gave and carry them out.

But after I sent the post, I scanned my PC with my antivirus AVG 8 Free and had some infections healed. For today, right now, NetMeter reports : Download - 13.98MB;Upload 802.1Kb. This I believe is a right proportion. Two days ago, it was DL-43.94MB,UL-44.08MB; which I now understand to be very suspicious.

I have just updated SAS and MBAM which is already installed on my PC and downloaded GMER as you said. Later in the day, I will do as you said and report back.

Thank you, once again.