For rooting Ramos W30 i used 

https://dl.dropbox.com/u/34053267/SU-Busybox-Installer.zip

from this thread:

http://www.pocketpc.ch/samsung-galaxy-s2-root-rom-gt-i9100/160141-anleitung-root-unroot-stock-ice-cream-sandwich-firmware-ohne-flashen-kernels-bildern.html

You don't need the CWM.zip!

Just put the SU-Busybox-Installer on one SD-card, start CWM with sound + AND - AND "on"

than apply update from external storage

chose SU-Busybox-Installer

than restart

voila! root!