getting my power book past my own encryption

I just bought a wireless access point and I'm trying to put an encryption on the network. Problem is that after I get the encryption up and running I try connecting with my airport card and the password I give is false although I know it's the right password because I made it. My friend suggested that there is a setting on my comp where I can enable the WEP settings or something and allow the router to send my mac WEP info. I run osx 10.3.5 can anyone help me with my problem?

change the type of key you're entering from WEP to the 40 something or other on the airport. I had that problem with a d-link.