Hello Joaquim,
nice to hear from you again and very nice, that you've made it to the new OMF.
I suppose your Website is in a very early beta-stadium. Most of the links do not work as they are supposed to be but I think you've already noticed that...
Some things to mention:
Code-Fragments:
In some pages (for example in 
http://www.joaquimjaneiro.pt/insignia1026010/index.htm) you have the following code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
Please remove the red marked characters.
Incompatible Fonts:
Sometimes you use fonts that are not recommended for Webpages. Fort example:
.style1 {
	text-align: center;
	font-family: 
"Maiandra GD";
	font-size: xx-large;
}
.style1 {
	font-family: 
Papyrus;
	font-size: large;
	text-align: center;
}
This is not the best choice because not all Computers viewing your pages will have these fonts installed. It's better to use fonts like Arial, Helvetica, sans-serif or Times New Roman, Times, serif. The third font-familiy to be used without problems would be Courier New, Courier, monospaced. This three font-families will work on 
every Computer.
Thats for the first look - keep on the good work (and maybe you will try to use an identical colour on all pages one day 

 )
Regards
Alex