Installing SQL Server 2000 on Windows Server 2003 Error 703 & NTVDM Errors

We are attempting to install a SQL Server 2000 ENTinstance on a Windows Server 2003 machine with a SQL Server 2005 deployment already on it. We are receiving an Error 703, and an NTVDM error which is preventing us from installing the older version.

Has anyone else seen this, and if so, what did you do to provide a workaround?

The machine's config is:

Pentium XEON 1 GHz,
2048 MB RAM
300+ GB disk space
Windows 2003 Standard Edition SP 1
march2kAsked:
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nakul_vachhrajaniCommented:
I believe that the issue is because you are trying to install SQL Server 2000 on a machine that is already running a higher version (SQL Server 2005).

SQL Server 2005 can be installed side-by-side on a machine running a SQL Server 2000 instance, but the opposite is not true.

I suggest that you work the other way around, i.e. install a SQL Server 2000 instance and then install a SQL Server 2005 instance.
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