I contacted an app maker and they are looking into expanding one of their existing photo apps to allow the iPad user to arrange the order.
I think this is mostly a Windows issue, because I read on another thread that iPhoto on macs allow for sequencing and this carries over to the iPad. Also, if the iPad sequencing is done with the date, then they'll have to determine the best method for dealing with this with that app.
If they do add the functionality to their app, I will post the info here.