we have a small biz server r2 2003 and all our mail comes from pop servers..do i need software to sync to client pcs with the blackberry

Can you please explain what you are asking? It's very difficult to understand what you are looking for.

I *think* what you mean is that you have SBS sucking e-mail into Exchange with a POP3 connector. Assuming this is all working ok, then this is irrelvent for your BB. making the assumption you want to use BIS then you can get your e-mail by connecting to the SBS Exchange OWA or - if you open the relevant ports and enable the IMAP service - by IMAP. I would recommend OWA as you probably already have this service available from the outside.