x300 SE Driver update

I have the ATI 128 MB PCI-Express x16 (DVI/VGA/TV-out) Readeon X300 SE and I have noticed that video driver updates exist for my system

Support lists:

Driver: 10/19/2004 ATI 128MB PCI-Express x16 (DVI/VGA/TV-out) Radeon X300 SE, v.8.051-040825a-017900C-Dell-MRMGA, A01 

Utilities: 09/22/2004
ATI 128MB PCI-Express x16 (DVI/VGA/TV-out) Radeon X300 SE, v.CPOnly-040713a-016867E, A01

The driver states under Fixes and Enhancements: "Driver support for Windows Media Center Edition 05 and Windows XP Pro/Home Service Pack 2"

Is this a critical update for using XP SP2?

If I should update, what are the precise steps?

Is the Utility listed part of the driver update?