>i'm new in linux.i want to interoperate between linux and windows.i heard some of them said to use samba to migrate it.but i don't know what command should i type for installing samba.any website can let me learn more about samba??and can i install .Net in linux??seems .Net is for windows s/w.

Linux is not something you get out of a box that will work without any effort, depending on the Linux distribution you have is the way you get Samba. If you want to download directly from them, their website is http://www.samba.org/

As for .Net, you can install mono from Novell, in their own words: "Mono is a platform for running and developing modern applications, based on the ECMA/ISO Standards. Mono can run existing programs targeting the .NET or Java frameworks." Novell's site is http://www.novell.com/