From Pop to Imap

I’ve got to change my inhouse mail access from pop(currently working fine) to imap. I use sendmail, fetchmail to pop mail from my isp, & have now enabled imapd in my xinetd.d. The clients are outlook97. What needs to happen in outlook97 to get thisto work? I have internet E-mail, outlook address book & personal folders running as services in outlook. Pls let me know if you need other info.
Thanks in advance – Keith