Custom order/invoice numbering

Hi.

I had an issue with my site which meant I had to return to a backup which was several days old (luckily I took advise and actually backed up my site). My issue is that I lost a couple of orders in the process. I have all details from emails that were sent.

Is there a way of re-creating the orders with the original order/invoice numbers? Or will I lose the original order/invoice number. Obviously I don't want my customers knowing that there was an issue with the site. (my fault, deleted the wrong module).

Cheers