Yeha, everything is working right now.
I want to share my knowledge in a few sentences, maybe it could be helpful. Dont know if make sense or not ... I am not an expert, so, please appologize, I just want to help noobs like me
1. Created an USB with Unibeast and tried to boot.
Problem Nr. 1: white screen, nothing happened.
Tried to boot with: "GrahphicsEnabler=No -v"
Result: same behavior.
Solved by: "GrahphicsEnabler=No -x -v"
2. Booted again
Problem Nr. 2: I could not boot, stuck at "PCI configuration begin".
Solved by: boot with "GrahphicsEnabler=No ncpi=0x3000 -x -v" (0x2000 works also fine).
3. Booted again.
Problem Nr. 3: "Still waiting for root device".
Solved by: changed USB port from 3.0 to 2.0 and didn´t used the fron ports.
4. Booted again.
Problem Nr. 4: very laggy, movin mous = reacation on the screen 10 minutes later.
Solved by: "cpus=1 GrahphicsEnabler=No ncpi=0x3000 -v" with cpus=1 you dont need to use -x
5. Booted again, now I could install ML on my HDD. Installation done. Restart.
6. Now while booting select your ML USB, select ML HDD and type again: cpus=1 GrahphicsEnabler=No ncpi=0x3000 -v
7. Install VoodooTSSync.kext, repair permissions with "Kext Wizard".
Continue with step 2 "
Installing Mountain Lion from UniBeast USB" (second post of this thread).
Have fun