Will deleting my screen shots affect my pictures in the sims home ?

No, it doesn't affect those pictures! I always delete the screenshots from pictures my sims take as soon as they take them :) I figure they're keeping those pictures so I don't have to. I guess the image file lives in the tray folder instead of Screenshots.

Thank you for this information now got to set aside the time to sort this out

My thanks to you both and happy simming