In reply to FesteringSore:
> (In reply to wilkie14c)
> [...]
> Because I have some urgent work to do on my pc
If you don't need the internet to do said work just unplug the d@mn thing from the network.
If you do need the internet then there's a number of options.
Not got time now to go through them, but you could just not worry too much about it. Personally, my view is if you are keeping yourself to well known web sites and don't do anything silly like open email attachments with .exe in the filename most of the time you'll be fine. Even surfing distinctly iffy parts of the web I've only picked up viruses a couple of times.