Played a little more... Turns out the option "Autoprobe video" got the newer Dimension 3000 going. Tried the same disc on older Dell Dimension 4100: Pentium III 866MHz, 512Mb Ram, nvidia GeForce2 GTS 32mb video and nothing to type, hit, press or click. I was looking at the graphical login screen in no time.
I think new hardware is overhyped...
Of course it is.. why do you think MS is pushing so hard for customers who use Windows to upgrade to newer and bigger hardware? Because they're trying maintain an alliance with manufacturers?
Well anyway, "autoprobe video" can sometimes miss on some hardware, and that is why the other options are there. Perhaps you will have better results using one of the other options?