e-mails, remove "TOTAL without VAT"

Nicolas,
My customer wants me to remove "TOTAL without VAT" on order summary e-mails and change "TOTAL with VAT" to "TOTAL". I see various strings in the language file but am unsure as to how to remove that one line.

Any help will be much appreciated.

Don

Nicolas, Thank you for your reply. Currently I see in the override zone the following:
PRICE_AFTER_TAX=" excl GST) "
VAT="GST"
TOTAL_WITHOUT_VAT="TOTAL : %s"
TOTAL_WITH_VAT="

If i modify the last line to read: TOTAL_WITH_VAT="TOTAL : %s",what should I do with the previous line (TOTAL_WITHOUT_VAT). I don't want it to appear at all. Also, are there other parts of Hikashop as far as the order goes that will need to be modified to affect this change?

Thank you,
Don