What happens when you try?
Do any apps sync?
You can nly sync apps from your one syncing computer for that device.
Try redownloadng them directly to the iPod by:
Just what are you trying to do with the photos?
If the photos on the old iPod are in the iPod's camera Roll album then import them to your computer:
If they were synced to the iPod from another computer then you need a third-party program like TouchCopy or PhoneView to import then into your computer.
Here is how to sync photos to the iPod: