Installing SendMail

[Wade Smart]

06272006 1604 GMT-6

After all these years I have not ever had to write code to send email -
until now. My php tutorial says that Unix uses sendmail. I looked in
Synaptic and saw that sendmail is not installed. So, if I install it,
will that interfere with my email client getting email from my isp
server or cause any other problems? And, what all do I need to install
-> sendmail base and???

Thanks. 

wade