what generation ipod do i have?

[-Paul-]

does anyone know of a site that can tell me which generation ipod do i have?

i have on that is:
I believe it is called the dock connector model
20 gig
4 buttons right below the screen
it has a wheel but no buttons on it
and it has a dock connector port at the bottom

 

[niceties55]

you have a 3rd generation Ipod