I need to flash my dvd-rom's bios so that it will work in Win2K. However, I have no clue on how to make a boot disk that will work with it. What do I need to do?

Well, a good old Win98 boot disk could do the trick !
You won't see your NTFS drives if you have any but who cares if it's just to flash a bios ..

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Config:
Dual celeron 400 on BP6
128 Mo SDRAM PC 100
Rage fury 32Mo, SB Live Player
IBM 20Go U66,DVD A103S,Yamaha 4*4*16*: IDE
Win2000 Final

I'll say only this:
http://www.bootdisk.com

nova.