ch66, even if you saved all the graphics with the original web-posted names, the web pages would not load properly from your local drive if the webmaster did not use relative paths in the html anchors and image tags.
Best bet is to download a website capture utility. I use this one:
<a href="http://www.nonags.com/files/redirect/?http://www.httrack.com/httrack-3.10.exe" target="_blank">http://www.nonags.com/files/redirect/?http://www.httrack.com/httrack-3.10.exe</a>
It is free (with a GNU type license) and the source code is available. I haven't tried any other applications of this type to compare with but this one is very good.