After you boot to the CD and GParted loads you will see a dropdown menu at the top right. This is for selecting your HDs.....
/dev/hda and /dev/hdb (first and second HD). Make sure you know which one you are altering.

If you make a mistake, the Undo button will get you out of trouble. If you create an incorrect partition, delete it and redo the step.

Your first HD should be all unallocated space.

Let's start on the first primary partition.
Right click in the unallocated space and click New
Make the New Size 30,000 MB, create as Primary partition, File system NTFS
Click Add, click Apply, confirm Apply, click Close
Right click in the new partition rectangle and click Manage Flags. Put a tick in "boot". Click Close

Now for the second Primary partition.
Right click in the unallocated space and click New
Make the New Size 5,000 MB, create as Primary partition, File system NTFS
Click Add, click Apply, confirm Apply, click Close
Right click in the new partition rectangle and click Manage Flags. Put a tick in "hidden". Click Close

Now for the Extended partition.
Right click in the unallocated space and click New
Create as Extended partition. Leave everything else alone
Click Add, click Apply, confirm Apply, click Close
Right click in the new extended partition rectangle and click Manage Flags. Put a tick in "lba". Click Close

Now for the first Logical volume.
Right click in the unallocated space in the extended partition and click New
Make the New Size 50,000 MB, create as Logical partition, File system NTFS
Click Add, click Apply, confirm Apply, click Close

Now for the final Logical volume.
Right click in the unallocated space in the extended partition and click New
Leave the New Size alone, create as Logical partition, File system NTFS
Click Add, click Apply, confirm Apply, click Close

That completes the first HD.

Select the second HD. It should be all unallocated space.

Let's start on the Extended partition.
Right click in the unallocated space and click New
Create as Extended partition. Leave everything else alone
Click Add, click Apply, confirm Apply, click Close
Right click in the new extended partition rectangle and click Manage Flags. Put a tick in "lba". Click Close

Now for the first logical volume. The Page File partition.
Right click in the unallocated space in the extended partition and click New
Make the New Size 5,000 MB, create as Logical partition, File system FAT32
Click Add, click Apply, confirm Apply, click Close

Now for the second logical volume. The Photoshop Scratch Disk.
Right click in the unallocated space in the extended partition and click New
Make the New Size 5,000 MB, create as Logical partition, File system FAT32
Click Add, click Apply, confirm Apply, click Close

Now for the next Logical volume.
Right click in the unallocated space in the extended partition and click New
Make the New Size 230,000 MB, create as Logical partition, File system NTFS
Click Add, click Apply, confirm Apply, click Close


Now for the final Logical volume.
Right click in the unallocated space in the extended partition and click New
Leave the New Size alone, create as Logical partition, File system NTFS
Click Add, click Apply, confirm Apply, click Close

Exit Parted Magic.

We have created an active primary partition on the first HD. WinXP will be installed to this partition. All you need to do now is boot to the WinXP CD and choose this partition. The second partition will remain hidden until you are ready for a dual boot at some stage in the future.
After WinXP has been installed go to Disk Management and give each partition an appropriate label for easy recognition in the future.