Query to replace old report where I could type in an exe name and pick an OU for it to recurse

Question

In SCCM 2007 there was a report I always used that allowed me to type in a .exe and then specify an OU, and it would show me all computers in that OU and it's sub-OU's that had that file name, and show me the version of that file.
I can't seem to find a report that allows that in SCCM 2012, so I'm wondering if someone out there has a query I could setup that would essentially provide the same data to me. 

Answer 1

Thanks.  I think I did something wrong though.  Here's what I put into the wql box and it says I have a syntax error
select s.Netbios_Name0,
 max(ou.System_OU_Name0) as OU
, sf.FileName,
sf.FilePath
,sf.FileVersion
from v_R_System s
join v_GS_SoftwareFile sf on sf.ResourceID=s.ResourceID
join v_RA_System_SystemOUName ou on ou.ResourceID=s.ResourceID
where ou.System_OU_Name0 like 'my.domain.com/MainOU/SubOuIWant%'
and sf.FileName like 'firefox%'
group by s.Netbios_Name0,
 ou.System_OU_Name0,
sf.FileName,
sf.FilePath
,sf.FileVersion