Default path for saving reports on file system

Hello,

during period of troubles connecting to Local Servers and Sites location i.e., to http://localhostname/ReportServer, the place where all Reports are saved by default, I have continued to work on some Reports that have been saved to file system of my localhost/developing machine. But, upon recovery of http location, I can not see/open those files?

Please, how to approach those files in order to open them in Report Builder 3.0 and thus, to "save as" them to the http location? Seems that Report Builder has chosen that location, by default, somehow.....

thanks

Note: Search of type *.rdl does not provide necessary answer!