For a number of reasons, I've finally switched from the hopeless Outlook Express to Mozilla Thunderbird... and so far, I really like the change. However, now that I've got Thunderbird, I find myself wanting to import my old Outlook PST file from a couple of years ago...
Now, it's worth pointing out that if you have Outlook installed on your PC, then PST importing is very easy - Thunderbird simply uses Outlook's MAPI interface to request all mail folders. However, if, like me, you don't have Outlook installed, and don't want to install it either, then you need to do a bit more work.