Eh, this is the first one I ever posted, so don't be too hard on me, eh? :)

Introduction:
Basically, I was tired of getting notices for whenever someone highlighted me, and if someone AMSGed me, i would get a ton of notices, so i decided to modify it so it goes in a window called @highlighter, which some people critic because they say a window wouldn't notify them well enough. All I have to say to that is that the window changes colors on my screen whenever text is added to the window, so that is enough of an alert for me, and I would prefer if all the highlights didn't get lost in endless conversations in chans, like notices would.

Function:
All you have to do is paste it in your remotes section of script editor and hit the F2 key to turn it on and off. If F2 is already doing a different command, change it to your desired F-key. The script will echo highlights when someone says, describes, notices or uses your name in a raw mode. It will also log when someone invites you to a room. It will ignore highlights if they come from a bot, but you have to edit the list of bots; the current example is "ChanServ MemoServ OperServ NickServ". If there are other bots you don't want highlights from, add their name. For example:

set %botlist Botname1 Botname2 Botname3

NEW: Script will now close your PMs, tell the user that you are not available and send a message to your @window telling you their query. All you have to do to reply to their query is open their message window, and the script won't tell them the preset.

Updates:
August 26, 2008: Thanks for the comment on how to fix the problem, I've corrected it.
September 26, 2008: Thanks for your furthur comments, I updated it again with offsite help as well.
December 6, 2008: Updated for nick highlights using multiple colors.
December 7, 2008: Forgot to make it echo an entire sentence instead of just the nick, updated again x.x
December 21, 2008: Changed menu to function key.
January 22, 2009: Updated for notice highlights and raw modes including your nick.
January 23, 2009: Thanks to some advice from a friend, I added a feature to ignore bots when they highlight.
January 25, 2009: Now logs invites and minor edit to %botlist variable.
April 25, 2009: Tweaked color formatting and added line breaks for easier navigation.
January 24, 2010: Added feature to close PMs and add a line to the highlighter window.

Picture:
Picture shows all the available outputs done in the highlighter window: plain text highlighter, an invite, action highlight, a notice, a rawmode highlight and a query.

alias F2  {
  if ($group(#highlighter) == off) {
    .enable #highlighter
    echo -a Highlighter is On
    set %botlist ChanServ MemoServ OperServ NickServ
  }
  elseif ($group(#highlighter) == on) {
    .disable #highlighter
    echo -a Highlighter is Off
    unset %botlist
  }
}

#highlighter on
on $*:text:$(/ $+ $me $+ /iS):#: {
  if ($istok(%botlist,$nick,32)) return
  if ($chan != $active) {
    window -De @highlighter 0 0 450 160 arial 13
    echo -t @highlighter $time(7(03h07:03nn TT7)) 3 $+ $nick 12said your nick in the channel3 $chan 12on the network3 $network 12and said7:3 $1-
    echo -t @highlighter 7--------------------
  }
}
on $*:action:$(/ $+ $me $+ /iS):#: {
  if ($istok(%botlist,$nick,32)) return
  if ($chan != $active) {
    window -De @highlighter 0 0 450 160 arial 13
    echo -t @highlighter $time(7(03h07:03nn TT7)) 3 $+ $nick 12described your nick in the channel3 $chan 12on the network3 $network 12and said7:3 $1-
    echo -t @highlighter 7--------------------
  } 
}
on *:notice:*:?: {
  if ($istok(%botlist,$nick,32)) return
  else {
    window -De @highlighter 0 0 450 160 arial 13
    echo -t @highlighter $time(7(03h07:03nn TT7)) 3 $+ $nick 12noticed your nick on the network3 $network 12and said7:3 $1-
    echo -t @highlighter 7--------------------
  }
}
on *:rawmode:#: {
  if ($istok(%botlist,$nick,32)) return
  if ($chan != $active) && ($me isin $1-) {
    window -De @highlighter 0 0 450 160 arial 13
    echo -t @highlighter $time(7(03h07:03nn TT7)) 3 $+ $nick 12used your nick in a mode in the channel3 $chan 12on the network3 $network 12and said7:3 $1-
    echo -t @highlighter 7--------------------
  }
}
on *:invite:*: {
  if ($istok(%botlist,$nick,32)) return
  else {
    window -De @highlighter 0 0 450 160 arial 13
    echo -t @highlighter $time(7(03h07:03nn TT7)) 3 $+ $nick 12invited you to the channel3 $chan 12on the network3 $network
    echo -t @highlighter 7--------------------
  }
}
on ^*:open:?:*:{
  haltdef
  .msg $nick 3I12 am not accepting queries right now7. 3W12hen 3I12 return to my computer7,3 I12 will message you back if it is important7.
  echo -t @highlighter $time(7(03h07:03nn TT7)) 3 $nick 12queried you on3 $network 12and said3 $1-
  echo -t @highlighter 7--------------------
}
#highlighter end