You'll want to create a custom segment for customers, then set up dynamic content on the page.
Segements:
http://community.marketo.com/Marketodeepdive?id=kA5500000008QOGCA2
Snippets:
http://community.marketo.com/MarketoTutorial?id=kA250000000Kz11CAC
Dynamic Content on landing pages:
http://community.marketo.com/MarketoTutorial?id=kA250000000Kz0cCAC