What is your purpose for finding these locations?
There is no such thing as "PC username", I believe you are referring to the Windows User Logon. Or "WINDOWS USERNAME". The "PC HOSTNAME" or "HOSTNAME" can be found in many locations by searching for that term in REGEDIT.EXE. The "WINDOWS USERNAME" can be found at "HKEY_CURRENT_USER\Identities\{%}" , and "HKEY_CURRENT_USER\Software\Microsoft\Active Setup\Installed Components\{%}" , among other places. The PC HOSTNAME can also be found in numerous places such as "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Tcpip\Parameters". Also be aware that the "HOSTNAME" is a networking function for both Netbios and...