I need help

My area just became available for DSL,
however, I am unsure if I have a workng ethernet card, I have searched my system

, I do have a sis pci fast ethernet adapter listed in I 386, I am unsure how to deploy? it I am afraid to sign up for DSL, I am afraid to tweak with my computer, I usually mess it up really bad when I play with the system. Any help would be greatly appreciated
