Home networking security

Hi All,

                        I have been playing around with Networking my home computers for a
                        while now. While I have been able to network them without many
                        problems I usually do not enable file and print sharing for security
                        reasons. Not having this enabled sort of defeats the purpose for
                        networking in the first place. I am running "Norton Personal Firewall"
                        and "BlackIce". Are these 2 programs going to give me enough security
                        if I decide to keep file and print sharing enabled all the time?
                        At this time I my setup is as follows.

                        2 computers dualbooting Win 2000 and Win98
                        Linksys 5 port hub
                        Cable modem

                        Thanks for any help.
                        Stephen