Exchange rate of variable currency in a variable Date in C#
<p>Hi Anyone knows any free Web service which can give me ability to convert my variable currency of into different currency in a variable date. I have tested this web service (http://www.webservicex.net/CurrencyConvertor.asmx) but it is not giving me option for previous date. 
Please guide me!</p>

<p>Kind Regards
Syed Sana ul Haq Fazli  </p>
