Hide individual Fields if not logged in or guest

To begin,
I am not a PHP pro by any stretch of the imagination.
I purchased PHPRunner with the idea that I could build some database driven sites.
PHPRunner is a AWESOME tool for me or anyone that is a novice. It has been a perfect application for building a basic database driven site.

Here is where I am lost. I have searched throughout the manual and the forums ( I could be searching the wrong term )

I need to hide individual fields if a user is not logged in ( guest mode )

example:
Table "Company"
I need to hide the following field if a user is not logged in or is viewing in guest mode

notes

there are other fields, but if I could get the basic concept, I can do it throughout the view pages