How to add FTP only user

["Senthilkumar.M." <senthil@intercept-india.com>]

Hi everybody,
How to a user who has only FTP access to the server.
We have a Red Hat Linux 6.1 .
Thanks&regards
senthil
begin:vcard 
n:Muthusamy;Senthilkumar
tel;cell:98400 43702
tel;work:91 044 434 9469
x-mozilla-html:FALSE
url:www.intercept-india.com
org:Intercept Consulting (India) pvt. Ltd.;Tech Team
version:2.1
email;internet:senthil@intercept-india.com
title:Technology Applications
adr;quoted-printable:;;3 - A, Century Plaza,=0D=0A560, Anna Salai;Chennai;TN;600 018;India
fn:Senthilkumar.M.
end:vcard