Cisco Router 2500 series

My brother has a Cisco 2500 series router that he can loan me to
>practice
>with. I have a small NT network at home, a PDC, BDC and Windows Me
>workstation. I have a DSL connection and Prodigy as my ISP which uses
>dynamic IP address. Is there a way for me to make use of the cisco
>router so
>I will be able to connect to my Home Network from work. What are the
>configurations I can use knowing that I don’t have a static IP address
>to
>use.
>
>My email address at work: rey@ccls.com; and home: regarcia@prodigy.net
>
>Thanks for any help given to me.
>
>Rey Garcia