You need to update to MacOS 10.6.6 for this, I believe.
Aperture link.
Also, you can now get iPhoto '11 separately. Can't see the price as I already have it installed, but I believe it's $14.99.
Aperture link.
Also, you can now get iPhoto '11 separately. Can't see the price as I already have it installed, but I believe it's $14.99.