well, found this article:
http://forum.mikrotik.com/t/using-routeros-to-qos-your-network-2020-edition/66683/1
guess helpful.. customized it a little bit for our needs regarding the LEVELS max/min bandwidth (70meg x 5meg cable connection)
level A = 60meg down, 4Mmeg up
level B = 40meg down, 3meg up