Any recommendations on editing the order update emails to make sense?

I'm setting up a site that has both downloadable and shipped products. When a customer pays by check the email sent when the payment is received basically contains....

Your order has been updated to the following status:
New status: Processing

This will only confuse the customer. What would you put in the email template so the customer knows that if he has shipped products they have been sent and if he has downloadable products he can log-in to his account and download them???

Anyone that has a site that sells both shipped and downloadable products want to share their email templates?

Re's
Rob