I install 8 over 7 and then I cant resize clusters... My mistake...
here is a list of new features on 8:
File Browser - Browse, copy, or move files and folders from one supported partition to another, including the ability to manage files in hidden partitions
PQBoot? for Windows - While running Windows, select which OS to run the next time the computer is rebooted
Enlarge NTFS partitions "hot" - No rebooting is required when expanding an NTFS partition, not even the system partition
New step-by-step wizards - Create Backup Partition and Install Another OS
Larger partition support - Support for partition sizes up to 160GB*
NTFS cluster resize Improve performance with more efficient cluster sizes
Now supports - Linux Ext3 partitions, GRUB, USB2, and FireWire (1394)**
Thanks trminatr! and zonko! for yours answers!