I've got the Dragon+ too, and just how much you can OC depends on the chip, your cooling mechanisms and the devices in your PC.
Try turbo. Doing so basically ups your RAM timings, you can see the difference in the RAM settings in BIOS (cant remember the exact steps). Check for stability.
133 * </i>
Frequency 1 MHz Stepping
Says Over clock the CPU Front side Bus in 1 MHz then type in the desired CPU Front size Bus
133 MHz FSB. If you PgDwn it increases 1MHz, I think PgUp will jump to 133. You can try and push it over that, but your limited to the speed of your devices.
CPU ratio Select
Auto * Default
6.0 x 6.5x
7.0 x 7.5x
8.0 x 8.5x
9.0 x 9.5x
10.0 x 10.5x
11.0 x 11.5x
12.0 x 13x
I think 10.5 is normal. You can try and up this, it will increase the internal clock speed by a lot (FSBxMulti).
CPU Vcore Select
Default +0.200v *
You'll need to up the voltage once your really OCing your chip.
Be careful, take your time and experiment. You should be safe at 133MHz FSB because that's what the chip and mobo run at. Above that, don't make jumps more than 1-2MHz at a time, check stability and CPU temps with each change.
I run an Athlon 1.4, and haven't messed with the XP yet but maybe some other folks here could enlighten us on that point