use the 12.04 live cd to repartition hard drive? My hard drive is full. I have available partitions(Vista) that I am willing to overwrite

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http://askubuntu.com – I have a dual boot system Vista and Ubuntu. I upgraded to 12.04 and ran out of hard drive partition space for Ubuntu. I a willing to blow away the Vista partition and the Acer recovery partition to make more space for Ubuntu since I never use the Vista and don't care about the recovery to Vista. Can I use the 12.04 live CD to repartition the hard drive and save my current 12.04 installation? Thanks in advance. (HowTos)