how do I rename my ipod in itunes? - Can i change it in my computer - PC- instead?

I connected my ipod nano for the first time to my computer but it is not the normal computer I use and is not set to my name - so my ipod is not set to my name - How do I rename it? I looked on the website here and it said to look in left column of itunes and find the ipad under devices and right click and rename - I just updated itunes and I do not see this - how do I do this?

Also - I have a PC computer - could I just rename it in my computer or would that screw it up?

Thanks