Recommendations on how to retain strategic advantage using e-commerce and information technology
http://en.wikipedia.org/wiki/Strategic_information_system
This article may or may not be OK, but the secondary sources listed at the bottom are worth finding and reading.
http://ecommerce.hostip.info/pages/236/Competitive-Advantage.html
http://www.referenceforbusiness.com/management/De-Ele/Electronic-Commerce.html
Read widely and take good notes. Let us know what you learn.