No modify>convert>polygons to subdiv

Hi, I'm currently doing the maya 4.5 tutorials and it says to make a polygon cube, select it and then go to modify>convert>polygons to subdiv. I would, but that menu is not there. I only have modify>convert>nurbs to polygons and displacement to polygons.
anyone know why?
cheers

What version of maya are you running? games, complete... unlimitted version number etc.

i'm not sure, how do i find out? I think it's unlimited, or it could be complete. i'm not sure as it belongs to my university.

about

it doesn't say in there. all it says in maya for osx version 4.5, august 14 2002, 16:06:24, all right reserved, blah blah. when i start maya up it does say field release.

i have looked in the script editor and it says:
// Warning: Node creation license for node type 'subdiv' not found. //
does this mean the program is faulty or that it just doesn't have it.
is there any way round it?

maybe its a builder version?

what's that, like a beta?

well its a even more stripped version of complete that is focused for gamers... but i think theyve ditched that...

is is possible its a mac thing?

ahh, ok, thanks for all your help anyway.
cheers