a service that allows you to buy online and have
the shipping address in the United States. The service will then
forward your package to Nigeria.

Hello marioinc, I didn't know that this kind of service existed.
However, there are plenty of companies that will do just what you
require:

http://www.finishlinepack.com/
We receive mail and packages on your behalf and forward to you
anywhere in the world, whenever you like, via U.S. Mail, UPS, FedEx,
DHL or Airborne.

http://www.myus.com/
Shop From All of Your Favorite Catalogs & Websites...    Have Your
Items Sent to Your Personal U.S. Address    ... And We'll Ship Your
Items to You, Anywhere in the World!

http://www.usglobalmail.com/default.asp?aid=231
Shop on EBay.com and other popular sites that will only ship to a U.S. address.

http://www.mbex.net/
Sign up and 
   receive USA address     Use it for your 
   purchase     We deliver your 
   packages to your door  

These services all have good websites and appear to be easy to use.

Good luck with your shopping in the USA, Redhoss

Hi marioinc-ga,

You might want to take a look at this question I answered for an
Australian customer last summer:
http://www.answers.google.com/answers/threadview?id=224170 It has
several other links and a bit more information that might also be
useful to you.

Best regards,
Byrd-ga

http://www.snopes.com/inboxer/scams/cnp.asp
Vendors have been duped into shipping large orders to Nigeria, only to
find they've been paid with stolen credit cards.

NIGERIAN REPACKAGING SCAM
http://www.ky-in.bbb.org/alerts/Alert_Apr142004.html

And thousands more:
://www.google.com/search?q=nigeria+stolen+credit+cards