How to display table cell background images in IE

Several years ago I created a web page called "LeeTutor's Doing and Fixing Windows" at my ISP's personal webspace site.  (See my E-E profile to get the address.)  I used the free tool from Microsoft, FrontPage Express to do it.  I have recently started working on it again after importing the web pages into an old copy of Dreamweaver that I acquired, version 4 to be exact.  I wanted to change the original site's use of background colors in the table cells to instead use background images of textured designs.  I have succeeded in doing this by changing all bgcolor tags to be background tags.  It looks very nice in Dreamweaver.  But the background images do not display in Internet Explorer!!  The text on my local site displays on a plain white background...  

I tried IE7 in both Vista and XP, and also IE6 in XP, in case it might be a browser bug, and it reacts the same in all of them.  Also doesn't display correctly in Firefox 3 on my Vista computer.

Here is the page on my site that I am trying to modify in Dreamweaver:

http://home.earthlink.net/~leetutor/DoWin/contmenu.htm

I will attach files with screenshots showing what it looks like in Dreamweaver, and in IE, and also the page's HTML saved in a file with the HTM file extension changed to .TXT.

I googled about the problem, and found this interesting page:

http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_14012
Internet Explorer does not display the background image in a table cell

But checking my code, it doesn't suffer from the described problem:  the background tag is in the TD element, not in the TR element.

I am barely above a Beginner in HTML and web page development using Dreamweaver.  Please suggest the easiest way I can get the background images in my table cells to display in IE and other popular web browsers...  And I am looking for EASY ways.  From my googling, I found that I could try doing it using CSS, but I have just barely started learning about that, and the prospect of adding a CSS style sheet to each of my over 500 web pages sounds daunting to say the least!