The only way you can create, delete, resize or merge existing partitions,
and not harm your existing Windows installation, is to use
a third-party partitioning program such as Partition Magic 8. http://www.powerquest.com/partitionmagic/pmdetails.cfm
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Carey Frisch
Microsoft MVP
Windows XP - Shell/User
No. No version of Windows has ever had the ability to change the
partition structure of a drive non-destructively. The only way to
do this (short of starting over and reformatting) is by using a
third-party tool, such as Partition Magic.