I'm running a dual boot Windows XP/Ubuntu system, and I'd like to increase the size of the Ubuntu partition at the expense of the Windows partition.

I've already shrunk the Windows partition, creating a large unallocated space between the Windows and Ubuntu partitions (See linked GParted screenshot).

http://s17.postimage.org/5ppnrrnot/GParted.png

I'd like to move my Ubuntu partition to the start of the unallocated space, and then increase its size to encompass all of the unallocated space.

Once I try and move it (Using the GParted live cd), it tells me to expect big GRUB issues since I'm moving my Ubuntu partition's start sector.

What is it that I should expect, and how do I handle it?

With thanks, Anatoli