SQL Server 2005 Non-ansi Joins: Any Easy Solutions?

My company wants me to research and flags or registry tricks that would allow non-ansi joins '=*' and '*=' in SQL Server 2005 with a compatiblity mode of 90 to be allowed.

The way I understand the situation is that in SQL Server 2005 with the database compatiblity set to 90, non-ansi join SQL such as the following would not work.

Select * from
Customer, Sales
Where Customer.CustomerID *= Sales.CustomerID

To work, the SQL above would have to be converted to ansi join SQL such as the following:

Select * from
Customer LEFT OUTER JOIN Sales
On Customer.CustomerID = Sales.CustomerID

Many hours would be spent browsing through millions of lines of code to find the non-ansi SQL and have changes made.

Does anyone know of any trace flaqs or registry entries that would allow SQL Server 2005 work in 90 compatiblity and still allow non-ansi =* and *= joins in SQL?

Thanks,
AIMDBA