How to shrink a windows partition to make more room for Linux?

[joe at actionline.com]

Eric last wrote:
>> If that doesn't do it, I expect you'll need to delete the partition
>> and re-add it, as the man page for ntfsresize says.

Well, it seems that I have ntfsresize, but no man page for it.

Brian last wrote:
> This was going to be my other recommendation, but I thought
> I would add a little more since it's a VERY scary process.
> ... You can delete a partition completely and then re-add
> it back to the drive without any data loss as long as you ...
> Make sure that you put the start of the partition at the exact
> same place the old one was. Make sure you take notes of the start
> and end locations of your partitions before you start ...

Today, I discovered this: http://gparted.sourceforge.net/download.php

CAUTION: Editing partitions has the potential to cause LOSS of DATA.
  You are advised to BACKUP your DATA before using the gparted application.

CAUTION: Partition editing problems can be experienced using
      GParted with newer GNU/Linux kernels (2.6.31+),
      udev (138+), and parted (1.8.8.+ up to 2.2 inclusive).
      These problems have even occurred with GParted Live 0.5.2-9.

So it doesn't look like gparted is going to be a viable option right now
in any case.

Perhaps I'm forced to buckle up and try the delete and re-add route.