How to send Schedule Email in ASP

[ahsan]

here is small situation at my end.

I have developed a website in ASP 3.0 and Acesss 2000/SQl
Server.

I wan my web site sent invoices to my customer
automatically ...at some specified time
(lets say it execute ceratain ASP page at 3:00 am that
send emails)

how can i schedule that?

Should i write some program (EXE) that will run on web
seerv to do this task or do we have soem other decent
solution?

comments please
Thank You in advance,
Ahsan