Mail question-->how to sync imap folders

[CmdrLaForge]

Hello,

I just switched to Apple - I bought a new 900MHz iBook. It works really great !

But now I have a problem to get my imap folders in Mail.

I have an imap email account. There I have some folders. What I try to do is that Mail is showing these imap folders and that I can read the emails in that folders. I can see that Mail see's these folders when downloading the inbox. I have no problem with the emails in the inbox.
I use Mozilla Mail on my PC and it works fine.

Does anyone know how to to that - is it possible ? Otherwise I just use Mozilla again ?

Would you suggest Mail as THE mail app ?

Thanks for helping me

Kind regards
CmdrLaForge