[http://www.ifixit.com/iPod-Parts/iPod-Touch-Gen-2-Front-Panel-Assembly/IF140-003|Here is the part] you need to replace the front glass/touch screen.
+
[http://www.ifixit.com/iPod-Parts/iPod-Touch-Gen-2-Front-Panel-Assembly/IF140-003|Here is the part] you need to replace the front glass/touch screen, you can purchase it in ifixit.com's parts store.
the repair guide can be found [http://www.ifixit.com/Guide/Repair/Installing-iPod-Touch-2nd-Generation-Front-Panel/1125/1|here], you can study the guide beforehand to see if it's something you're comfortable doing yourself.
[http://www.ifixit.com/iPod-Parts/iPod-Touch-Gen-2-Front-Panel-Assembly/IF140-003|Here is the part] you need to replace the front glass/touch screen.
the repair guide can be found [http://www.ifixit.com/Guide/Repair/Installing-iPod-Touch-2nd-Generation-Front-Panel/1125/1|here], you can study the guide beforehand to see if it's something you're comfortable doing yourself.