BIOS Question ???

[visionmaster]

I have Micron Millenia PC (built in 12/20/1996) with following
configuration:

MM 55 Hi plus Rev 2 motherboard (Micron)
Phoenix Bios version 4.05 ( 12/22/96)
pentium 200 cpu
Two 2.1 gig 50 pin SCSI hard drives
one 12x scsi cd rom drive
Adaptec 2940 Ultra SCSI Controller
Cable which can have six devices
WIN NT4 Server SP3

I want to add 18 gig hard drive.
Does this bios recognize hard drive of
this size. I can not flash the bios
beyond 4.06 ( 07/1/1997) for this
motherboard. Any pointers will be appreciated.

Thanks.