Can you auto update the order status?

I am trying to find a way to update an order status to shipped for an order that consists only of downloadable products that have all been downloaded.

I am on Zen Cart v1.3.8a/v1.3.8

Thanks in advance,
Rick

admin > Localization > Orders Status > set your default

I should clarify. For orders coming back as successfully paid from my processing company, I would like to distinguish between physical items that have to be shipped and virtual orders that are downloaded.

Basically I want someway to mark all of the downloads so that they stand out and we don't have to go in and mark each download order as shipped.

You would need to write code for this, looking up each order in the db and somehow verifying that there are no physical products in it, then updating the order status for those that qualify to a new status like "Download". The verification method could vary depending on your store's organization. If all downloadable products are in one or more separate categories, you could use that as a criterion; if not, it could get tricky.