I tried both methods mentioned above separately; ran a full inventory with the /file option...it didn't pull in inventory on regsvr32.exe unfortunately.
Then added regsrv32.exe to the file mask section:
I made sure my test machines received the new inventory package, then ran a full inventory...doesn't seem to have captured the file. I checked by running this query against the database:
select * from Inv_AeX_SW_Audit_Software where [File Name] = 'regsvr32.exe'
Any other ideas, or is there anything else I might be missing? Thanks!