Possible Duplicate:
Programmatically access currency exchange rates
How to get live currency rates and quotes of stocks? It can be any country related. So that I can integrate them in my application. I just don't know where to start with. Looking forward for a right direction to start with.
You can find any web services and retrieve the data from them. One of the examples: http://www.xignite.com/xcurrencies.asmx
If you use asp.net, it is very straightforward to implement.
You may want to check out JStock - Free Stock Market Software
No currency related. But provide code to retrieve live quote of stocks.