>What "big" corporations do is use the exhange rate posted at close of day the transaction was posted, or close at day before.

Not good enough for us, we need live data.

>Can your merchant account service do the conversion for you?

Yes, but this is not good for us. We need to show that to the user the minute before he processes the transaction. I also need to save that currency exchange rate at the invoice level and all of that. Basically, I need to control everything.

>Cheap data. Real time rates are expensive - you have to have a Bloomberg (or something similar). The cheap rate services can lag the market by minutes hours or day.

I need to analyze those links I received. I might be able to find something affordable in there.

>Whay are you using soap? Are you page "scraping"? How is the return data packaged?

Our robot queries the Web Service at specific interval. So far, the only one I have found was using a Web Service. I don't care about the method. As long as I have something workable, this would be good enough for me.