Ok, I can help with that.
First, select the event you want to make it from.
Here is the link shown above.
It will show you how it is done.
For more detail Use the Help in the menu bar for iPhoto.
It will open to this.
You can click number 6 (pictured above).
For more detail click on Browse Help.
Then look at Share Digitally.
It will show you step by step better than I typing it in, faster too.
Then when it is all to your liking send it to iDVD
(if you have that, Apple quit having that as part of the iLife suite).
It can be found as part of iLife 09.
Since you have Snow Leopard then iDVD may be in the Applications folder, looks like this.
Look that over and let me know if you have any questions, please take your time, it is a lot to take it quickly.