Problems with SubSection

[spider]

Ok, I have edited a warthog and I got the vertices indices correct. I was able to inject the new model, but before it finished it said:

Maximum allowed subobject: 14
Your model's subobjects: 421

So how can I fix the subobject problem. I am using maya6, and milkshape to create it.

Thank You,
Spider

[DOMINATOR]

yeah ive gotten that before but i only got 24 subobjects when i modeled my double turret hog but i doubt there is a way to fix it