As AMD has made it much more difficult to unlock their Athlon XPs now compared to the Thunderbirds with wider gaps between the L1 bridges and worst still, grooves in between each L1 bridge. This has made it impossible to use Pencil trick now. Nevertheless, we won't give up unlocking the Athlon XP just like that so we need to overcome this hurdle.
VR-Zone has posted a guide on how to unlock the Athlon XP using a simple and fast method. I am able to select any multiplier ratios between 6.0X to 12.5X and the motherboard is able to follow the multiplier settings i have set and boot up normally.
FULL STORY @ VR-ZONE (http://www.vr-zone.com/guides/AMD/AthlonXPUnlock/)