I use a quick free program called "Frame Fun", which you can get just by googling it...
I know it sounds like a dodgey program, but it is fairly decent

Especially considering it doesn't cost you a thing.
It does batch processing which means you can just choose what you want, the design and hit go and it will do your photos that you have selected automatically...
I don't use photoshop, so can't help you in that regard...
Saves you heaps of time instead of going one by one...