DFI AK74ec and Duron 650

[Calypso]

I built this machine a few months back and would like to try
overclocking it. However, I understand that this mobo is not that
overclockable. I found the step by step site
http://www.rojakpot.com/Speed_Demonz/Duron_OC/Duron_OC_01.htm which
details a lot of info particular to my processor. However, I don't
think my bios can change the voltage etc. Can any one help me with info
on this board in particular? The system is:

System Information

Item Value
OS Name Microsoft Windows ME
Version 4.90.3000 Build 3000
System Manufacturer VIA Technologies, Inc.
System Model VT8363
Processor AMD Duron(tm) Processor AuthenticAMD ~650 Mhz
BIOS Version Award Modular BIOS v6.00PG
Total Physical Memory 255.45 MB
Available Physical Memory 14.47

[Components]

3D Prophet SE
WD 30Gig ATA 100 7200 Hard Drive
Nec Zip 100 internal Zip Drive
Standard 3 1/2 Floppy
Adaptec AIC-7850 PCI SCSI Controller
Creative SB Live! Value
NEC NR-7700A CD-RW
Zoom Internal 56K LT Voice Faxmodem
Alcatel SpeedTouch(tm) USB ADSL PPPoA

 

[clock-n-roll]

The only adjustments on that board are the front side bus. That board will go to about 107 FSB before it craps out.
The core voltage is adjustable in the Bios, right on the same screen with the FSB if I remember correctly, but why change it if you cant adjust the multiplier, right?
It is a nice stable board, but will not overclock well.
DFI now has the AK-75EC which supports multiplier adjustments and 133 FSB.