You can use diskmanager or use paragon's Hard Disk Manager 2010 for the job
Just installed W-7 x64 along w/ Vista Ultimate x32. I had the hdd in three partitions but now want to merge the (former XP) spare partition into the W-7 to increase its size. I have had no success finding an application that will run on AMD's 6-core Phenom.
Anyone out there playing around with the new 6-core and have any info to share would be greatly appreciated.