Common paths in Loadrunner

C:\Program Files\HP\LoadRunner\bin\certs
you can make changes in index file for Certificate entry

C:\Program Files\HP\LoadRunner\config

open wlrun7 and you will see all default setting of loadrunner.

Like default script path, result path, timeout, etc...

AgentMaxThreadsPerDriver :It is where you can specify number of threads per process(mdrv).

HostConnectTO,HostDisconnectTO etc.

you can make changes and restart Loadrunner.You can see recent scripts on the path
C:\Program Files\HP\LoadRunner\config

For Error file
C:\..Script-Name\logfile

Execution detail
C:\..Script-Name\output.txt

C:\..Script-Name\data\
Recordinglog
CorrelationLog
codeGenerationLog
also..downloaded image will be saved under data

 Result Set
C:\..Script-Name\Result

 Recorded Script
C:\..saved-Script-Name\

e.g script name is dataEntry.usr. can be launched script by clicking on it.