How to Fax in C#

can u ply give me some tips regarding 


1) sending of fax from asp.net with c#
2) receiving of datas from fax machine to our aspx page.


it should be better if some one posts the total steps from iitialization to final or give some ideas that how can i solve this problem

and wat v have to install in the system in order to send fax!

thanks in advance

waiting for ur responces