The click wheel didn't exist in 2001. And the screen was not particularly large, either (the Neo Jukebox, for instance, if I remember correctly, had a similar sized screen). The iPod Mini introduced the Click Wheel, and debuted on the iPod proper on the 4g (both in 2004). And the connectors were horrible early on: all firewire. Windows was supported through MusicMatch (eww) on the 2g and 3g, and it was after the 3g release that iTunes came to windows.<p>And it was when iTunes came to Windows that the iPod took off in sales (ironically, reversing a LONG trend by Jobs to keep Apple products on the Apple platform). In 2002 and 2003 they sold less than a million units. The first quarter they had iTunes on windows, they moved over 2 million units--more than double what they'd sold the previous holiday quarter.<p>People look at the iPod as this huge instant hit. It wasn't even 'till Q4 2004 that Apple sold more than 1m units in a quarter. And sales in 2005 came in a large part from selling through Wal-Mart, too.