Your MoBo may support Flashing the BIOS from a thumb-drive. Check it out. It will save you having to install a floppy.
Also Asus has several BIOS upgrade utilities sych as, AFUDOS. There is another that can be done via the internet.
Check this link: http://usa.asus.com/search.aspx?sear...rchkey=m2n-sli
I generally use a floppy (old dog, new trick - can't/won't learn, blah, blah).
If you use the thumb-drive, let us know how it goes. Maybe I'll get the nads to try it myself.
P.S. The guides and FAQ's for OC'ing are ubiquitous - You can find some in this forum, or you can Google. Do some thorough reading before OC'ing. Know your specs and thresholds for temps and voltages so that you do not damage your components.
For Pete's sake, I'm editing my edit: I would recommend using the BIOS instead of OC'ing utilities.