Mac OS... I want a file I rename, that has the same name as another file, to automatically label it as 2nd, 3rd, etc. Windows does this automatically, but in the Finder it says I need to give the file another name. I am doing a work project that involves renaming a few thousand photos and they are by category -- so I'll have "photoX" "photoX (2)" "photoX (3)".

I've been using my old HP, and on Windows this is very simple because it automatically adds the (2) (3) etc. when I try to give the files the same name. On my new MacBook (also my first Mac so I'm still figuring things out) it basically says "sorry, no, try again." I can type the numbers manually, but it's so much faster to get the program to do it for me.

I don't want to install a third party application (at least not right now -- I might consider it for future similar projects). I'm in the middle of this project and don't have the time to go figure out a new app. Is there a way I can do what I want in the Finder? Or am I stuck with typing everything in individually?