Xela, many thanks for your help and to avonsponrock for the video it was a great help.
It took me a couple of attempts but I did get it to work with the fujitsu driver
and have a fully functional laptop.
It failed the first time because my wireless connection was still turned on and when it had installed the driver Win 7 decided it wasn't the right one and re-installed the original VGA driver. The trick is to either make sure you are not connected as Cris suggested or to restart the computer for the second time before the old driver can be downloaded.
Thanks again, can't tell you how pleased I was to get it working properly!