Thnx Maroon:

On *:JOIN:#:{
if ($nick isin $read(see.txt, 1)) { write -l $+ $readn see.txt $nick $chan $date $time }
else { write see.txt $nick $chan $date $time
}
}
On *:text:!seen*:?:{
msg $chan $2 last seen $read(see.txt, nts,$2)
}


THNX laugh