Hook Locations

[dcpaq2xx]

Group,

Im trying to create my own plugin for the Default check [x] Remember Me?hack out of trial and error, and I am just wondering what hook location this would go to since the code is modified in the nav bar template of each theme.

PHP Code:

<input type="checkbox" name="cookieuser" value="1" tabindex="103" id="cb_cookieuser_navbar" accesskey="c" checked="checked" /> 


I have no idea as I dont even see templates or themes anywhere in the Hook Location drop down menu.

Could someone help me out with this and possibly share some pointers or tips with me on creating plugins?

Thanks

Doug