is it possible to display thumbs in two different sizes..
for example the first one big and the other ones smaller?? (not the random function though)

Does anyone know something about this or give me some idea how it works?

Yes, that is possible. You have to modify your themes index.php or album.php. Put a counter on the next_album() or next_image() loop then use the getCustomSizedImage Function to display the first differently. More about that function in our functions guide.

thanks a lot, good to know it s possible.. I will give it a try

wow that was easy... worked great.. thanks!