Many security programs are out there. I would suggest heading over to ZDNet (http://www.ZDNet.com), heading to 'downloads', and doing some quick searching. I believe you'll find more than you need to lock web browsers, desktops, and much, much more.
Thanks for the ideas...I had planned on using a security type device but the server crashed right when the "show" was about to start. Luckily I had a copy on CD and used that(if no one had suggested that I would have been hurtin'). Once again, thanks.