Code:
alias ni { dialog -m ni ni } 
dialog ni { 
  title "Nick Identify" 
  size -1 -1 140 196 
  option dbu 
  edit "", 1, 16 20 70 10, autohs 
  edit "", 2, 16 48 70 10, autohs 
  edit "", 3, 16 76 70 10, autohs 
  edit "", 4, 16 103 70 10, autohs 
  edit "", 5, 16 130 70 10, autohs 
  edit "", 6, 16 159 70 10, autohs 
  button "On", 7, 15 177 32 12 
  button "Off", 8, 54 177 32 12 
  button "Ok", 9, 96 177 32 12, ok 
  button "Identify", 10, 96 32 32 12 
  button "Identify", 11, 96 87 32 12 
  button "Identify", 12, 96 142 32 12 
  text "Nick", 13, 45 9 12 8 
  text "Pass", 14, 45 35 12 8 
  text "Nick", 15, 45 64 12 8 
  text "Pass", 16, 45 90 12 8 
  text "Pass", 17, 45 145 12 8 
  text "Nick", 18, 45 117 12 8 
} 
alias nia { dialog -m nia nia } 
dialog nia { 
  title "About" 
  size -1 -1 120 135 
  option dbu 
  box "About", 1, 5 4 109 39 
  text "Addon : Nick Identify", 2, 11 15 97 8 
  text "Version : v3 Beta", 3, 11 28 97 8 
  box "About Author", 4, 5 44 109 84 
  text "Author : br0nx", 5, 11 54 97 8 
  text "Author Chan : #scr1pt1ng", 6, 11 70 97 8 
  text "Author Serv : irc.krstarica.com", 7, 11 85 97 8 
  text "Author Email : br0nx.20@inbox.com", 8, 11 100 97 8 
  text "Addon Address : br0nx.20.forumer.com", 9, 11 115 97 8 
} 
on *:dialog:ni:init:*: { 
  did -a ni 1 %nick.1 
  did -a ni 2 %pass.1 
  did -a ni 3 %nick.2 
  did -a ni 4 %pass.2 
  did -a ni 5 %nick.3 
  did -a ni 6 %pass.3 
} 
alias nick.1 { 
  set %nick.1 $did(1) 
  %nick.1 
} 
alias pass.1 { 
  set %pass.1 $did(2) 
  %pass.1 
} 
alias nick.2 { 
  set %nick.2 $did(3) 
  %nick.2 
} 
alias pass.2 { 
  set %pass.2 $did(4) 
  %pass.2 
} 
alias nick.3 { 
  set %nick.3 $did(5) 
  %nick.3 
} 
alias pass.3 { 
  set %pass.3 $did(6) 
  %pass.3 
} 
on *:dialog:ni:sclick:7: { 
  set %nick.1 $did(1) 
  set %pass.1 $did(2) 
  set %nick.2 $did(3) 
  set %pass.2 $did(4) 
  set %nick.3 $did(5) 
  set %pass.3 $did(6) 
} 
on *:dialog:ni:sclick:8: { 
  unset %nick.1 $did(1) 
  unset %pass.1 $did(2) 
  unset %nick.2 $did(3) 
  unset %pass.2 $did(4) 
  unset %nick.3 $did(5) 
  unset %pass.3 $did(6) 
} 
on *:dialog:ni:sclick:9: { 
} 
on *:dialog:ni:sclick:10: { 
  set %nick.1 $did(1) 
  set %pass.1 $did(2) 
  nick %nick.1 
  nickserv identify %pass.1 
} 
on *:dialog:ni:sclick:11: { 
  set %nick.2 $did(3) 
  set %pass.2 $did(4) 
  nick %nick.2 
  nickserv identify %pass.2 
} 
on *:dialog:ni:sclick:12: { 
  set %nick.3 $did(5) 
  set %pass.3 $did(6) 
  nick %nick.3 
  nickserv identify %pass.3 
} 
on *:nick: { 
  if ($newnick == %nick.1) { nickserv identify %pass.1 } 
  if ($newnick == %nick.2) { nickserv identify %pass.2 } 
  if ($newnick == %nick.3) { nickserv identify %pass.3 } 
} 
on *:connect: { 
  if ($me == %nick.1) { nickserv identify %pass.1 } 
  if ($me == %nick.2) { nickserv identify %pass.2 } 
  if ($me == %nick.3) { nickserv identify %pass.3 } 
} 
menu * { 
  - 
  .Nick Identify:ni 
  .Nick Identify About:nia 
  - 
}