"Easy" question regarding manually entering password for network access

Okay, I've set up my wireless router at home, got the laptop synched up. When I double-clicked on the icon to connect to my own network, I must have double-clicked a "save password/automatically connect" notice. (Still getting used to the new laptop.)

What I'd like to do is NOT automatically connection, and I'd like to MANUALLY enter my password in in order to connect.

How can I "reset" things back to what it started as? I've searched everywhere but can't seem to find anything to help.

Thanks!

 

Operating system/Wireless software?

With XP just delete the connection and recreate to your requirements.

 

Vista and Netgear router.