Hi,
Gergely's solution is simple and works great, except formatting Math Numeric, Currency Decimals and Julian (or jd) Dates.
Converting dates can be solved in Excel, though you have touch each one in each table.
Numeric and Currency values are harder, because you lose the information about their decimal places and each numeric/currency field could have different setting - so you have to covert them one by one individually.
Regards,
Zoltán