I have the L 500 Series. What I've done was I installed the Toshiba help and support Disk. Mine came with a backup disk and I was able to download the security options and devices that came with it. What I'd sugest is you write to Toshiba and ask them to send you a disk which does support your Toshiba laptop. Or you can dowload this from the Toshiba website on the internet. I have mine 3 weeks and I've had no problems as such yet I paid €550 Irish Euro for mine.
Toshiba owner., December 2009