need some help with router setup.

[thas]

ok so here the deal. I'm setting up a linksys wrt54g router. I am almost done here but I am entering the security settings. I am going to use the WPA setting and it is asking for the key used by my network. This is a stupid question, but what is this key? Thanks in advance for answering.

EDIT: NVM I asked a stupid question. I found out what it was.