You have an iPod and an iTouch. Your iPod used to be updated on a different computer. How do I enable the new computer to be able to update the iPod as well as the iTouch you ask?
Right now the songs on it show up “greyed out” and you can’t edit or move them around. You have iTunes on this computer but can only update your iTouch on it. If you are transferring the iPod from one computer to another that runs the same operating system ie. from Windows to Windows then it shouldn’t be too tough a process.
If you are trying to transfer the iPod from different operating systems ie. from Windows to Mac then that will be more difficult.
I’m not exactly sure if you just want to move the device and sync or transfer files from that iPod to the different computer so please read Apple’s using iPod with multiple computers article.

