Unless you really need transparency in your web images, I would recommend using jpg instead of png for web images. GIF format (max 256 colours) also supports transparency but imo are more suitable for tiny images like clipart, small icons or images with very few colours.
Hopefully you can get yout png files down to an acceptable size.
This is my first time working with a few things on the web - transparency and jQuery, so maybe I'm getting too excited and over-doing it.
I've managed to make a few adjustments* and converted a few of the graphics from PNG24 to PNG8. I also modified the background texture image so that it's smaller and now repeats seemlessly. That helped a lot.
*I made the top "danmathisen" banner thing PNG8, reducing it from 40kb to 10kb, by killing the fading shadow and making it a solid color so that it doesn't need the alpha channel. I think I'll do the same for the slider thing on the home page. I was also able to bring the top banner down from 128 to 32 colors, reducing the file size even more.
Thanks again for your help... it's all starting to work out.
Unfortunately adding layer styles, special effects etc to images in Photoshop or whatever, whilst making them look great on the screen, slideshows, paper print etc, they can become huge in size very quickly.