Reporting Services :: Getting Execution And Session Timeout Params

We run std 2008 r2.  I've never been able to get to my ssrs server thru ssms as u can see as part of the question at 

[URL] ..... but I've found workarounds to this point by knowing how to look at the rs db itself and by having access to the server itself thru rdp with an admin acct.

I'm looking at an error from a user that reminds me of what we used to call session timeouts.  They would occur when the user has walked away from his desk long enough for ssrs to delete refs to the report he just ran.

I logged into the server itself hoping to find both exec and session timeout params via the rs config tool but did not see them there. What the config file is called and where i'd likely find it?  Or perhaps a query I could use to see what the current values are?