The program uses windows default currency symbol, so to change the currency symbol you will have to change it from windows.
1. Click the start button the from the menu select “control panel”.
2. From the clasic menu select “Regional and Language options”.
3. From the format tab click “Change this format” this will open the customizing dialog.
4. Select the currency tab then locate the currency symbol and change it to your required symbol.
5. Apply changes and save.