Here is more detailed description of how you can go about moving content from one site to another:
Migrating an existing site to another site:
http://kb.worldsecuresystems.com/203/bc_2038.html
Migrating and importing contact details from another site:
http://kb.worldsecuresystems.com/212/bc_2123.html
Migrating web forms from one site to another:
http://kb.worldsecuresystems.com/206/bc_2063.html
Migrating Web Apps from one site to another:
http://kb.worldsecuresystems.com/208/bc_2080.html
Migrating a set of modules from one site to another:
http://kb.worldsecuresystems.com/210/bc_2108.html
Migrating an online store to another site:
http://kb.worldsecuresystems.com/204/bc_2048.html