JPG images will loose quality when you increase the 'JPEG' compression, but the file size can decrease dramatically. JPEGs show 'true colour'. You use the toolbar button to insert images in Microsoft FrontPage Express. The image should now be displayed in the page. Many Web users browse with image display switched off in their browsers, to speed up the loading of the page.
Some Web users are blind.
If you hold the mouse pointer over an image in Microsoft Internet Explorer 3 or 4, or Netscape Navigator 4, you will see your atlternative text appear as a 'bubble caption' or 'tooltip'. The easiest way to get buttons and icons for your pages is to steal them from other Web pages. Copyright does exist in images and text on the Web, but there are many sources of copyright free clipart on the web. Below are a few of the ones I have used. The pages above have a large graphics content which means a longish download time.