Allow user to choose diff logo in the report

Hi all,

I am very new in Crystal report.
I have this report which for three different compabies.
I have three different logos for the report.
How can store the three logo and allow the user to choose the logo when they run the report?

I have a main report and created a subreport for the logo but I do not know how to setup the subreport for the user to choose the logo.

I am using crystal report 2008.

Thanks