Wow, kesian lah to u. But not to worry, if i'm not mistaken, 1) When you sync, there will be an option to  transfer your purchased app from the ipod to the computer if the app's not on the computer 2) If you log into itunes store using your itunes ID, I think you can redownload those apps for free, but the disadvantage is that the data from the apps are gone lah. Hope this helps. Do correct me if i'm mistaken.

no you won't. all app are tracked by your itunes id. so you can re-download it for free. the only problem is your game save files and all your settings are gone