Hi Greg,
Yes, I am using a Lead capture page/website (LCW) to direct people to the opportunity I am promoting. Perhaps you may wish to take a look at the LCW here :
http://www.eliteteammarketing.com/84748
This LCW is part of the marketing system developed to promote the opportunity. When some one responded by filling in their details like emails, etc, the autoresponder will then "kicks in" and deliver a series of marketing messages.
I am promoting the LCW solely online and using PPC advertisement. However there are many other ways to promote the LCW like putting your ads in ezines, article submission, through search engines and others.
Based of the results from my own PPC promotion, yes such system can work.
Regards
Cornelius