Trying to finish out the BoS quest line and was given the option of bringing a weapon back from Vault 32 (or 33), or bringing back some info from the vegetative vault 22. Problem is I can't get deep enough into the armory. I get a 'this door needs a key' block when trying to get far enough into the armory. Where is the key, or where do I turn off the security for the door?

Thanks!

Feed a man a fish he eats for a day teach a man to fish he eats forever. Or in this case give him a fishing guide.
http://fallout.wikia.com/wiki/Vault_32

Here is a video which shows you how to get into the Armory.

http://www.youtube.com/watch?v=Ue9zPK-5Jpo

(It maybe a walk thought to get a good weapon in side it but it shows you how to open it.)

I'm pretty sure you and the OP meant http://fallout.wikia.com/wiki/Vault_34.

The Vault is probably the most confusing Vault in New Vegas, and make sure you have lots of Rad-Aways since you may be spending quite some time there.

Lol what I did was do the "Come Fly With Me" Mission and got the space suit and then when in, totally easier and also before you go in BE READY AND GET ALL THE AMMO AND STUFF YOU NEED!
Also watch the link I put in my former post.