Setup Requires a different version - Half Life install problem

[Paul Woodward]

"Setup Initialization Error
Setup Requires a different version of Windows.  Check to make sure that
you are running Setup on the Windows Platform for which it is intended."

I have wine 20010731   installed from source, and I am trying to install
halflife  from the original cd.

$ mount /mnt/cdrom
$ cd /mnt/cdrom
$ wine SETUP.EXE

Anyone got any ideas?  Other apps installed to a "real" windows partition
work OK (e.g. Lotus Notes is fine).

Paul.