Ok, now i've got that out of the way.
For httpd RH9 comes with Apache, it's the best make sure it's installed and use webmin to get it setup.
RH9 should also have webmin installed, it's a web based server interface, makes life easy.
Ftp I'd go download pureftp, RH comes with proftp but I like pureftp better myself.
Mail? Unless you have a domain name or your pulling your mail from your isp with it, I would'nt worry about it.