I guess that there is USB Boot on this motherboard, assuming that you have the latest bios version 0313, it should be okay.
I have checked in the BIOS release notes, it mentionned many fixes on USB flash device.
Possibly, it may not work if you have older bios version. Try to update the bios to the latest one using a bootable floppy or cd
Go to Boot Menu in the BIOS
Boot to Removable Devices EnableBoot to Optical Device Enable
USB Boot Enable
Boot USB Device First Enable
I hope these options are available in your BIOS as i dont have this board to test it for you.