I need to use a GUI SQL Query builder in a demo in the near future. Is there a decent, open-source one that generates plain ANSI SQL? Preferably through ODBC, but JDBC might work as well.

I can't imagine that if you are licensed for the SQL 2000 client tools that MS would care if you also installed the 7.0 or 6.5 versions. So licensing shouldn't be an issue, tell your admin to get ...