Hello
sorry for newbie questions but i would like to know suse 
well i am getting new pc and i will use my old one for fileserver.
so sketch
i got linksys router with dd-wrt micro,2 pcs xp so i will need
this server to be linux based so i believe Samba would do it
questions
Samba or nfs?and how to do it ,setup and more?? is there any how to?
thank you
Samba server is the better choice for you. You can refer to following procedure to setup samba Server.
Bryan’s technical world: How to build up a samba server for linux and windows client on opensuse