Wow guys! Thank you so much. I really appreciate it!
Graynomad:
But you don't need MISO because you are only talking one way.
oh.. that right! Thanks! 
But I have some more questions guys... 
It's alright.. I just want to understand how this "business" works. I will get a Attiny with more pins if needed. 
Thanks anyway!
How exactly to load it? $)
Lakes:
You can do it with an ATtiny, but you have to charlieplex the LED`s.
UziMonkey's blog: Charlieplexing on the Arduinohttp://www.instructables.com/id/Creating-a-charlieplexed-LED-grid-to-run-on-ATTiny/
WOW! LOVE YOUR LINKS, THANKS! 
really helpful.
Graynomad:
mixania, just use a shift register and save yourself a lot of pain
Hmmm.. What about it? How it works? ]
NiñoScript:
add 8 16bit I2C GPIO expanders, and use charlieplexing
there you go, direct control for 16256 LEDs, using only two pins of your Arduinoenough for a 25 x 25 x 25 LED cube
Wow! Man thats crazy! maybee some day.. 
$) 8) 