Keeping App save data / migration help!

Hey everyone. My hard drive crashed about a week ago and I've got a bunch of music on my iPod Touch as well as a bunch of apps, both free and ones I've gotten from Appulo.us.

I've got another older hard drive in my MacBook now and I've restored all the music using Senuti. It still won't let me sync though because the Touch is still associated with the old hard drive. What I'd like to do is sync using the new hard drive and the existing Touch (http://www.andrewgrant.org/2008/03/3...computers.html) but I can't get the Persistent ID that the Touch is associated with.

Alternatively, I'd like to keep all the save data/scores from my apps and then I'm happy to re-sync the touch under the new system.