ok well luckily i use windows media player too so i can help ya :)
to go tools > options > and click on the library tab, and uncheck the box that says "retreive additional info from the internet" or something like that, and then click the "privacy" tab and uncheck the "update music files" box
what bit confuses you?
iPod 15Gb ('04) - Mac & Win
is this one
the other ones seem relatively self-explanatory?
though they do seem to double up on some of the item descriptions =S
this is the old ipod (the model before the one with the grey clickwheel)
this is the current one (with grey clickwheel) AKA 4th generation ipod
ipod mini
colour ipod (same as 4th gen but with colour screen)
u2 ipod (same as 4th gen but different...