Worked for me as well. I agree with below -- I had to read the instructions 
twice (probably because I just expected it to work differently),

On Thursday 03 June 2004 8:32 pm, Federico Krum wrote:
> works for me with realtek, 3com and NE2000..... At the begining I dident
> understud the instruction. Read carefully !! UNPLUG all network cables,
> then press A to autedetect, then plug only ONE cable, then press enter.
>
> Federico
>
> ----- Original Message -----
> From: "Dennis Wallberg" <dennis dot wallberg at bredband dot net>
> To: "Quark AV - Hilton Travis" <Hilton at QuarkAV dot com>
> Cc: <m0n0wall at lists dot m0n0 dot ch>
> Sent: Thursday, June 03, 2004 7:54 PM
> Subject: Re: [m0n0wall] No Link-up Detected
>
> > Quark AV - Hilton Travis wrote:
> > >Hi All,
> > >
> > >>-----Original Message-----
> > >>From: Andrew Eglington [mailto:aeglington at hotmail dot com]
> > >>Sent: Thursday, 3 June 2004 22:14
> > >>To: m0n0wall at lists dot m0n0 dot ch
> > >>Subject: RE: [m0n0wall] No Link-up Detected
> > >>
> > >>I was installing (smirk, like booting from CD is an
> > >>'install' - I love it!).. installing a first time m0n0
> > >>tonight and also came up against this problem of it
> > >>saying the link is not detected, despite it clearly
> > >>being plugged in.
> > >>Does 'no link up detected' mean the card thinks it's
> > >>not plugged in? surely it doesnt relate to the subnet
> > >>being in a different range? (because mine was at the
> > >>time - default m0n0 = 192.168.. and PC set to 172.16..)
> > >>I'm not sure what I did, which likely means its just
> > >>m0n0 being a bit buggy, but after trying auto the usual
> > >>'few times', i went to manually assign and noticed
> > >>"link up" (or whatever the wording is) indicated next
> > >>to the card I was about to assign as LAN... so
> > >>evidently it decided to see it in this manual context.
> > >
> > >I have performed quite a few m0n0wall installs, and have never seen the
> > >"auto detect" actually work, no matter what network cards I have had in
>
> the
>
> > >machines.  If anyone here has actually had an "auto detect" find their
>
> NIC,
>
> > >please let us know.
> > >
> > >I have a funny feeling this feature is broken, and if so, we may as well
>
> ask
>
> > >Manuel to remove it from the options - if it never works, then why have
>
> it
>
> > >there to confuse people?
> >
> > It sure worked for me, 3x 3com NIC (xl driver)
> >
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>
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