How To Order?
To order on line the software product you've selected, please choose below one of the on-line order forms, according to your situation. We only accept orders prepaid with a credit card. After charging your credit card, you'll be able to download the software immediately. See below the list of accepted credit cards.

After checking your order form, you'll be redirected to the secured server of a specialized service provider to charge your credit card. From this point, all exchanges will be crypted, using the SSL (Secure Sockets Layer) protocol. This protocol is the safest way, for the time being, to charge credit cards on line. Your credit card number will never come out of specialized transmission circuits used by banks and similar companies. As a matter of fact, we'll never know your credit card number.
We publish on this site our sales conditions and the prices of the software we offer. See our Price list. If you need it, you can also produce on line a pro forma invoice.

Wo Are Logiciels & Services Duhem?
We publish on this site a presentation page showing who we are and what we do. This site exists now since december 1995, what is almost as long as a century in cyberspace.

Technical Support/Assistance
Because of time lag, we can't offer a real phone hotline for technical assistance, but this doesn't mean that users are left alone facing their problems. Our email assistance is very effective and should help you to overcome the problems. More, this Web site offers a support section with a lot of information which could be useful for you.

Accepted Credit Cards
We accept following credit cards:

        
     

About Taxes
If you are a resident of the European Community, we have to apply the French VAT (19.6%) on invoiced amounts if you don't have a valid European VAT Id-number. Please use the specific EEC Order Form (see the link above). For obvious reasons, we have to check this very seriously and will not send software against orders without a valid postal address.

Price Computation Method
Since our company is based in Paris (France), our prices are expressed in euros and we apply the current exchange rate to compute the applicable prices in US dollars. If you want to compute the corresponding value in another currency, please use Xenon Labs Personal Currency Assistant.
The current exchange today is US $ 1.5526935372 for 1 euro.
US Dollar exchange rate updated on 5/7/2008.
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Advantages of On-Line Ordering
Ordering on line is very convenient. Your credit card is charged for the amount stated and you download the software immediately. You can therefore use it immediately, without waiting for useless delays.
Ordering on line also means that you always get the latest version of the software, directly from the publisher.
You also enjoy the direct assistance of the publisher if you encounter problems while installing or using the software.
More, for a limited time period, we don't apply any handling and shipping charges to all orders placed on the Web site.

Risks of On-Line Ordering
Many Internet surfers have mixed feelings about giving their credit card number on the Internet, but give it without any problems on the phone to the clerk of any mail-order house.
The payment system we use offers many advantages. You don't have to give us your credit card number, so we don't have to store it and to protect it.
You only give it on the secured bank Web site. The credit card number only travels on secured transmission lines. The forms are installed on secured servers, which offer the best security conditions available today.
The credit card is a very convenient payment method, and the rare problems touted about don't measure against the huge number of transactions successfully completed with plastic payment tools.
Anyway, there are also other order methods (see above).
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