This option executes WuInstall on a remote machine using PAExec. The hostname and login credentials have to be specified in the argument ("\\hostename -u user -p password"). All other WuInstall options can be specified as usual.
WUInstall.exe /remote "\\testhost -u myuser -p mypasswd" /search
This command executes WuInstall on the host named "testhost" and performs a search.
For more information about PAExec visit http://www.poweradmin.com/paexec/.