Mailing List Programme

Hello: I have created an application to read email addresses from a list and to send emails. The problem now I am facing is, if the list is very long then I am getting an error message in the browser "Server Timed Out". How can I display a confirmation message and continue sending the emails from the server? That is, trigger a separate script (not related to browser) on the server which handles the emails and then return a success message. Can anybody help me to find out a logic or script on this. Sheni R Meledath sheni@cyber-gear.com