Nav 2009 R2 Employee Portal on SharePoint Foundation 2010.

Hi

We are trying to get Employee portal to work on Sharepoint foundation 2010. When trying to install the front end components on the sharepoint server the system gives an error that sharepoint services must be installed.

But i already installed sharepoint foundation on the server. Does anyone know how to solve this prob?

Thanks in advance

Can Anyone help me please ? [:(]