Is there an order stock/ship options mod?

I'm looking for a mod that lets me add order options and the customer can choose via check boxes.
For example, I could present the customer with options like:

• Drop-ship order
• Hold backorder
• Contact me if not enough in stock before shipping

Does anyone know if a mod like this already exists?

Thanks.

These can be added as attributes either a drop box or radio buttons

• Drop-ship order
• Hold backorder
  This is automatic if you are tracking stock as they will be alerted when viewing their cart
• Contact me if not enough in stock before shipping

You mean attributes to a product, not the order, correct?

I have several sales channels so the stock shown in ZC is not correct a few times. I keep track of everything in QuickBooks and upload a file to update stock number in ZC every night.