Dear Friend,
$mail_subject="Message from my server";
$message="click here to see the link";
$message .="http://yoursite.com?arg1=val1&arg2=val2";
use headers and content type as text/html
and add the headers to the mail function
$mail_headers = '';
$mail_to="abc@yoursite.com";
$mail_headers .= "Content-type: text/html; charset=us-ascii \r\n";
$mail_headers .= "Content-transfer-encoding:7bit \r\n\r\n";
mail($mail_to,$mail_subject,$message$mail_headers);
regards
bvsureshbabu