help with resizing partitions

[b_dot]

Good day to all, I'm happy to be a part of these forums. On to the issue:

One of my customer's has a Mac Pro. She would like to increase the size of her Windows partition, meaning that I will have to decrease the size of her Mac partition.

My question is, what is the easiest (nondestructive) way to go about doing this? I was thinking that (in theory at least), I should be able to do the following:

1)Boot from the OSX disk, and shrink the size of the Mac partition.

2)Boot into Windows, and using Partition Magic allocate the the free space I gained above to the Windows partition.

...And hopefully everything will work ok without data loss.

I didn't just want to jump right in and try as I don't want her losing any info.

Can anyone confirm this method?

[eric2006]

If you have Leopard, you can resize partitions. From what I hear, you may need to do a complete defrag before this, which you can do with iDefrag and another computer, or by cloning the system onto itself with CCC or SuperDuper.
Once the partitions are resized, you just need to get Windows to see the changes.