Oscommerce fixes

The site in question has the following problems that need to be corrected. A cc validation problem that returns the following error when certain (but not all) Visa cards are used: The first four digits of the number entered are: <br>If that number is correct, we do not accept that type of credit card.<br>If it is wrong, please try again There is also a problem with a recent CCGV contrib. Gift voucher amount is shown on the order but is not deducted from the cc payment. I am using Paypal Pro. Lastly, I have a webpage on an Apache server that was recently brought into W3C compliance. I would like it downloaded into Frontpage 2003 so that it can be updated as needed by my staff. Note: The Oscommerce install has had a number of contribs installed.