new laptop, need to transfer data and have unlocked iphone??

[m3jappa]

Right i got a new laptop and i want to transfer data from the old to the new- i assume its as simple as getting a memory stick and dragging it over...right?
I,m not worried about favourites or programs as i can do that manually.

I also have an unlocked iphone 3gs which is on 3.0.1 , i assume i can't install itunes 9 as it weont work right with the older unlocked and jailbroken phone?

Whats the easiest way to get all my playlists over onto the new laptop and have everything working how it was?

Thanks