How to add a pre-existing subreport

Hello -

I am completely new to SSRS; I had been working with Crystal Reports in the past.

1.  I have a subreport that has one parameter that links to the main report.  I have no idea how to link up the subreport.  Any suggestions?

2.  Also, when I try to select the subreport, my only option is to select from Recent Sites and Servers, which is blank.  Where would "Recent Sites and Servers" be so I can put my subreport there?

Any help will be greatly appreciated!

Juniormint