How do I unlock a memory card?

[lisid]

My husband (who I have a few choice names for atm) decided to lock the memory card on the camera the last time he downloaded photos. I have NO idea how he did this (or why) and no idea how to unlock it. It won't allow me to do it from the camera, it skips over the option completely. We have mac's and use iphoto...I'm assuming he did it from there but I have no clue and can't get in contact with him. So I can't take pictures of my darling skinbaby who pulled himself up to a standing position for the very first time.

[lisid]

okay nevermind, little switch on the side of the card. oi