Hi,
I tested your page in IE4.0 and NN4.73
1)I see a some differences in your background-colors. In the left part and right part off the screen (I have 17"

, this is left and right of your tabel, I see an annoying background with dark en light lines.
Your back_ground.gif occers this, because if you enlarged this gif you'll see that it has lines in 2 different colors #990000 and #993333. you should change this gif to only one color #990101 like your backgroundcolor in the table.
2) Why use <body bgcolor="#CC9967" ??? Why not bgcolor="#990101" so you allways have the same color if the back_ground.gif cannot load for some reason.
3) The image home-Page-Cut_19.jpg has an annoying left and bottom border.
4) If I was your customer I wouldn't agree that the link to "DeZine Post" will start in the same browser. Now you loose focus from the customers site. Start this in a new browser with target="_blank"
5)I see differences in colors between the corners of the images like i.e. "home-Page-Cut_08.jpg" and the bgcolor="#990101" Try to make these colors the same.
6)I'm sorry to say, but the menu-bar (I think it's one from dynamicdrive.com) on the page "about_lactose.htm" don't work in IE4.0 It works OK in NN4.73
7) In the first sentences Welcome to the new home of..... it looks like "The Lactose-Free Lady" and "The Lactose-Free Cookbook!" are links. Personaly I hate this. You always want to click on it.
8) The list in What's new looks OK in IE4.0 The <li>'s are centered here. In NN4.73 the <li>'s are not centered and the <li>-text's are black.
Try this for the color in IE and NN:
<li><fontcolor="lightgrey">text</font></li>
9) Because I only could test the menu-bar in NN, this is what I saw in NN: After clicking the links 'about the book' and 'get the book, .. " the menu-bar-bgcolor change to ligtht-yellow and the link-color change to yellow and that's verry annoying. The colors change back after clicking one of the other 4 links.
10) On the six pages from the links in the menu-bar the right-bar is interrupted on diffferent places by the default bgcolor. I think some other images overwrite the <td> width the image right_border.gif
Sorry to have so much comment, but I Hope this helps you
Erik