You're never going to be able to stop someone from using the back button. There are a few things you can do though. First, you could open a page in a new window, then close it on them when they've done what they need to do. Second, you have some variable set when the user does what he or she needs to do. When they go "back" to a previous page, check to see if that variable exists, if so, kick 'em out.
That's not it, but it might get you thinkin' in the right direction. Kevin
slanek@ssd.fsi.com
"Life is what happens to you while you're busy making other plans."
- John Lennon