I understand, but when I click on rectangular selection tool there is nothing above it, nothing like you describe here; when you click on the rectangle selection tool, three options will apear in a bar JUST ABOVE the work window,
one says TOOL, one says SELECTION MODE, and the third says NORMAL,, click on the NORMAL and a drop menu with NORMAL, FIXEL RATIO, and FIXED SIZE will appear, choose FIXED SIZE and you will get three additional places in the bar, one for height, one for width and one to set measurement with. set to pixels, enter the values you want, then position the selection where you want it.
I consider myself 'puter literate pretty good w/hardware & software and there aren't really that many places to click with drop down menus or what not.
I'm thinking maybe I got an older version or didn't get a complete download so later today I', going to uninstall Paint do a restart and download & reinstall the latest version and see what happens then. Really appreciate your help and please stay with me until I get this resolved.