DaMa, place this in your css file to change the active link colors.
Code:
.node A.active {
color:#color !important;
}
The actual css is hard coded into the system style css and seems to be unable to be overridden regularly (I assume due to php logic some place) so just force override it with this.
You should also turn on "clean urls" since the default node urls are simply ugly. You might also try installing Path Auto to make things look even nicer and help automate the flow of content generation. If you have any other questions about setting up a Drupal site don't be afraid to ask.
I also agree that your old site layout was quite superior. There really is no good reason to sacrifice aesthetics with Drupal, you can convert your html layout over quite easily with some theme overrides, although you might have to cut down on the tables substantially. Just remember use float a lot
. I would also suggest moving your image gallery over to Drupal with Gallery or Image which both have a D6 dev build.
Edit: Oh and I should mention that you can change the tab site image from the Drupal icon in the Site Configuration option. It would be a good idea to do that
.