Thank you for that info. The current version of iPhoto is '11 and it's part of the software package "iLife".
I don't remember if iPhoto was provided as part of the standard
System software in 10.4 - so, my first recommendation is to try to update the software. Forgive me if you already know how to do this or have already done so.
If not, go back to the apple in the upper left corner and either pull down to "About this Mac" again (and then click the "Software Update" button located there), or pull down the menu to "Software Update" directly under the apple menu.
If iPhoto was
part of the original system package, it will download an update for it automatically. Just follow the prompts the installer package gives you. If not, I think your only option is to purchase it from Apple here
. Please be aware though, that iLife '11 REQUIRES
the machine to be running OS X 10.6 (Snow Leopard)...so if your machine is older and not capable of running 10.6, don't purchase iLife '11, as it will not run.
Hope this helps, best wishes!