Running MSDE 2000 side-by-side with SQL Express 2008 on same machine

I would like to install SQL Express 2008 on a machine to host a database.

However, I have discovered that the customer's machine already has MSSQL 8.00.760 (MSDE) installed and running. It hosts a DB for an application, but nobody knows the security details / sa login, etc.

Is it possible to install SQL Express 2008 on the same machine and run it side-by-side with the existing MSDE instance?  If so, is there anything special that needs to be done or considered?

Thanks for your help.
mikealsweilerAsked:
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DBAduck - Ben MillerPrincipal ConsultantCommented:
They should run side-by-side because it will be another instance name which would make it unique to the machine.
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mikealsweilerAuthor Commented:
Thanks, so installing MS SQL Server 2008 Express won't end up fighting over ports or anything due to it being a unique instance name?
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DBAduck - Ben MillerPrincipal ConsultantCommented:
No it will pick its own port
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