heres uptime script its small but helpful

on *:text:!uptime:*: {
/msg $chan 5I have been Connected to 12 $+ $server for 11,1[ 4,1***15,1 $uptime(server, 1) 4,1*** 11,1]
/msg $chan 12My system have been online 5using mIRC v $+ $version for 11,1[ 4,1***15,1 $uptime(mirc, 1) 4,1*** 11,1]
}