Custom Session Handlers

[gamew0rld]

I am thinking on using custom session handlers like those on this site:

http://www.daniweb.com/code/snippet43.html

I want sessions to expire after 3 minutes when users are logged into my members area. However, if they are viewing the flash tutorials, I want them to be able to watch them and not worry about being logged out, up to two hours. If I use the session handlers like on that site above, can I set session_expire to 3 minutes on all of my pages except the one where users view the flash tutorials, and on that page, set it to two hours or something like that?

I have never used custom session handlers before and arent to sure how they work.

Thanks!

Joe