Depending on the complexity of your database, it may not work reliably with a database program so old.
http://en.wikipedia.org/wiki/FileMaker Mar 2004 FileMaker Pro 7
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Thankyou for the advice to contact technical support.
They were very helpful and it turns out that Filemaker Pro11 would work without converting the files, or 12 or 13
which would then convert the files.