Thanks Jon and Pete,
I put the drive in today no problem.
I did read those links Jon, thanks. I am running WinXP
SP1 and I updated my Atapi.sys to the latest version. I
also checked with Dell and they said my BIOS is 48 bit
LBA enabled. I needed to turn on Auto recognize in the
BIOS for slave device on the primary channel as it was
set to off.
I installed the drive and followed the instructions that
came with it. It's a Maxtor and I used the MaxBlast
software. Although when using the software there was an
option that was I believe called "express setup" which
would only set up the drive to use 137GB, I had to go
back and choose "Custom setup"
After installation I was all set, my drive worked, showed
full capacity and showed Ultra MDA mode 5.
The instructions said to run MaxBlast again from Windows
to install an EnableBigLBA patch to the registry as not
doing it the large drive support may not be fully enabled
and may lead to data loss. I did it just to be sure and
it looks like I am all set!