iPhoto 2 is an old version from 2003. The latest version is 9.0. To upgrade your iLife and iWork. If you only want iPhoto or other single apps from iLife '11 you can get them from the App Store after you've upgraded to 10.6.6. iPhoto, iMovie or Garage Band for $15 each and Pages, Keynote or Numbers from iWork '09 for $20 each.
If you want the full box set of iLife you can buy it on eBay http://www.ebay.com/sch/i.html?_trkparms=72%253A1234%257C66%253A2%257C65%253A12% 257C39%253A1&_sacat=0&_nkw=apple%20ilife%2011&_sc=1&_sop=12