local sx, sy = guiGetScreenSize ( )
function guiRegistered ( x, y, w, h, text, relative, parent )
GUI = guiCreateWindow(sx / 2.5 - 310, sy / 1.4 - 260, 246, 340, "TEXT", false)
player = guiCreateButton(6, 4, 233, 56, "localPlayer", false, GUI)
anims = guiCreateButton(78, 65, 65, 20, "Anims", false, GUI)
info = guiCreateButton(149, 65, 65, 20, "Info", false, GUI)
close = guiCreateButton(7, 89, 65, 20, "Close", false, GUI])
end
addEvent ( "onPlayerRegister", true )
addEventHandler ( "onPlayerRegister", root, guiRegistered )
Then you trigger the event: "onPlayerRegister" from the server side when the player registers.