Você não pode encontrá-lo porque o comando netsh wlan
existe somente no Windows Vista, Windows 7 e no Windows Server 2008.
O netsh
do Vista não funcionará no XP.
De Artigo de Technet da Microsoft explicando netsh wlan
:
Applies To: Windows Server 2008,Windows Server 2008 R2
...
The commands documented in the Netsh WLAN reference for Windows Server® 2008 can be run - as documented – on computers running Windows Vista®.
Likewise, the commands documented in the Netsh WLAN reference for Windows Server® 2008 R2 Release Candidate (RC) can be run - as documented – on computers running Windows® 7 RC.