If you don't fancy using the macro, you can download my add in from the link below which has a custom written function which, when installed can give the result in USD, GBP, EUR, INR or none. The syntax you would use would be :
Not that I'm aware of. It would be a lot more difficult the other way round because you would try and extract whole words (not single digit numbers) and there are different ways of writing the numbers (Americans tend to use "one hundred fourteen", British would use "one hundred and fourteen") there are also various commas (or not to contend with). In addition to this, the numbers to words question comes up often, but rarely the other way around.