Try add this to your remote. ALT + R in mirc..
raw *:* { echo -a $1- 4> $numeric }
Now you will see the text displayed with the: /who #channel
And if you want to use that information.
raw *:* {
if ($numeric == 352) { haltdef | echo -a $1- }
elseif ($numeric == 1) { haltdef }
}
haltdef will halt default text to show up in the status window. Dont know if this is what you looking for..