To save: Just right-click on the image,"save image as"
REFERENCE IMAGE
Get a set of 800x600 satin backrounds for image or page. Click on the exampale for the zip file and download
TO USE
Go to the folder containing the one you wish to use and Copy it to your work folder
copy the image that you wish to put in the frame to your work folder and resize and crop (you will probably need to do both) it to the right size as stated in the reference image
center paste the image onto the frame. In IrfanView; Edit>Overlay>locate imag, set transparancy (It is designed for a watermrk)>center
Save as or In IrfanView File>save to original folder using a new name
You are done
Doing it this way lets you keep unused copies of the frame. I keep a "parts" box in my drawing section