Here's my problem. I'm on chapter 2 also, and I am stuck at this point.
I'm more of a user rather than a Mac Techie, so I don't know of any other temp folder other than the one running from the main hard drive in the finder "Temporary Items".

I use OS X 10.3.9, Safari 1.3.2, IE 5.2, and sometimes Mozilla 1.7.12

I'm using MAMP as my Apache and MySQL server, setting the document root to my Sites folder from my user folder (/Users/myuserid/Sites). The Personal Web Sharing item is on in my Systems preferences.

I also use BBEdit 8.2.4 to do my coding (like Homesite for PC users)

And for the life of me, I cannot get this stupid session code to work. I bring up the movie1.php on my local host in all these browsers, and nothing works! I've even copied and pasted the correct code from other users who have done the same thing (no difference as far as I can see) and I still can't do it. Other than being on a Mac (ha-ha), what have I done wrong.