im running ubuntu, and i'd like to dualboot with backtrack4. problem is i don't get how to make partitions for backtrack without wiping out my disc. the rest of the installation is somewhat clear but i can't use fdisk for the life of me... the thing is, basically im not willing to run around and tie together a whole bunch of install information and risk needing to reinstall everything. can someone give me concise instructions as to how i can put backtrack4 on my disc? muchas grasias---