The people over at Viper's Lair have reviewed a HighSpeed PC Athlon XP Unlocking Kit :
Overclocking Athlons is an effective, and free way to get more out of your rig. FSB is one part of the equation, and unlocking the multiplier is another part. It isn't that easy to unlock an Athlon XP, but we look at a kit that makes unlocking a snap to do.
"First and foremost let me warn you not to use an anti-static bag in the unlocking process, unless it is used to transfer the CPU from one location to another. Anti-static bags are coated with a metallic film on the outside that conducts electricity; thereby preventing static electricity from contaminating whatever is inside the bag."