Hacking DS Replacement Help

[JPH]

First off I'd like to state: I am a Retard.

I was taking apart my DS Lite (Don't ask why) and once I got the back shell off...I decided to put it back on.

For some reason - I left the volume switch plastic out.

So, I put it back together to find out: I've got a plastic voulme switch out and my power button is broken.

I have the task of getting my older cousin to put the volume switch back on for me...one problem with that: I don't have my tri-wing screwdriver.

Could I leave it like it is a send it to Nintendo for a replacement? (Will they check to see if the volume button is there?)

Or should I order a new tri-wing screwdriver, then get my cousin to put it back in?

With the release of Zelda...I want it back as soon as I can