This site has a link to the img file you want and some other info. You don't need other stuff if your just making an image. Basically its the files from an XP CD, anything you want to integrate and the microsoft corporation.img file.
Here's a tut on how to use Nero to burn the image, it assumes you have integrated SP2:
Make a bootable XP SP2 CD with Nero Burning ROM 6
First, start Nero Burning ROM and choose CD-ROM (Boot) from the New Compilation's Boot
page (scroll down). Then, under "Source of boot image data," choose "Image file" and
point it to "Microsoft Corporation.img" by clicking the Browse button (you need to
download this file or create it from an original cd). Then, select the option titled
"Enable expert settings (for advanced users only)" and change "Kind of emulation" to No
Emulation, and change "Number of loaded sectors" to 4. The "Load segment of sectors"
option should remain at its default value of 07C0. Now, select the Label page in Nero
Burning ROM. Under "Volume label, ISO 9660" enter the name of your CD (WXPVOL_EN in my
case which is the Corp edition). When this step is completed your done in this window
On the right side of the application, in the File Browser area, navigate to the windows
files you saved on the hard drive. Then, select all of the files inside of that
directory and copy them over to the new CD from the right window to the left new disk