i am currently using a macbook 13' bought in feb 2008. i would love to buy snow leopard but my only concern is losing my applications.. does the install keep the current applications..?? especially as they are all 32 bit..
Your applications are retained if you do an Upgrade.
Everything is lost if you do an Erase & Install.
If you do an Archive & Install, than you will still have all of your old data stored in a "Previous System" folder, which you can drag your apps and data back into your main hierarchy.