i am sorry i dont think you can change them because they are not the same are they but if they have the same thing that you need to replace have a go it is worth a go but touch screens are crap mine only lasted 4 month and the screen broke for nothing when i diddn't do anything and it was working that night.
2G
iPhone/iPod Touch/iPad iPhone: 1G, 2G, 3G, 3GS, 4 iPod Touch: 1G, 2G, 3G iPad
Any iPod Touch 2G case WILL fit the 3G. I've purchased two myself.
no...
they do for you
It does indeed! :)
if you meen Ipod Touch 2G upgrading to 3G it is Bluetooth and the Search Page! if you meen Ipod Touch 2G and the new Ipod Touch 3G it is the 64gb and voice control!
Yes
Yes by about 1-2 seconds.
yes i believe so
No. They are different. The iPod touch 4 screen has more pixels so the iPod touch 3 won't support it.
no only ipod touch 2g and 3g have built in internal speakers