this is all very new to me - i am technically a bit lightweight, but although my site interacts successfully with worldpay test site fine, when i try to communicate with the live site it fails.

I understand that is because rbs worldpay want me to make the transaction in GBP but the currency on the site is hardcoded to USD

For example, when we look inside worldpaypaymentprocessor.cs there is the following code
[quote]remotePostHelper.Add("currency", "USD"); [/quote]

I understand that i can modify this , but then need to recompile. this is where i get a little hazy. Once i have recompiled, which file should i be transfering to my live to site?

any help most gratefully received