Do you HAVE to have software to us a Chroma key/Green Screen?

I purchased a green screen / ChromaKey and wanted to know if I had to use specific green screen software in order to use it. I need the screen for Photography purposes.

Can't I just take out the screen and replace it with a digital backdrop in Photoshop?

Thanks!
This is ONLY for Photography purposes. I won't be needing it for videos at all. Thank you