question to nobody in general:

i currently use mandrake 9.1 linux, and am interested in checking out ubuntu, on the recommendation of a number of friends. the only real concern i have is email. i use kmail 1.5.3 on KDE 3.1.3, and i want to transfer all my email messages, filters and folders to whatever linux i upgrade to, and i’m not exactly sure how to do it. can you clue me in?