Ok. I've opened the 'Network and Sharing' from the Control Panel and under Netgear Connection there's a Security panel with some options.
At the moment it says 'Open' and one of the options on the drop down box is
WPA2-Personal which sounds right.
Selecting that gives me an encription option between AES and TKIP. Which?
It also brings up a box to put in a Network Security Key - Where would I find that?
Cheers