You need a form-to-email processing script. Preferably one which conceals your e-mail address from harvesters and has built-in spam prevention.
Contact your web host and ask them if they have one you can use. Hosts often provide scripts on their servers which you can activate through your Admin Panel or by referencing the script in your form's action attribute.
<form action="path-to-script-on-server/form-to-email-script.php">
If your host doesn't provide scripts, ask them which server-side languages you can use (php, asp, asp.net, perl, coldfusion, etc...).
Nancy O.