Image resizing Project

I have about 2000 images to check and resize for inclusion into my OS Commerce shop. I need you to go through all of these one by one and resize each one twice first to: 500 pixels width, height doesn’t matter and add to the file name _500w then let it put the file extension. Then resize the original to 98 pixels by 92 pixels removing the red borders and text boxes but, leaving a small black border on both size [login to view URL] this thumbnail keep the same name but add _th to the filename. Please make sure all the images are of good quality when viewed both as 500 width and thumbnail size and they look good. Thank you, UKUAP