2 questions

[Xplorer4x4]

A forum i visit usies this vb cide:
Drop
Dropdown list.
Usage[drop=Option]value[/drop]
Example Usage[drop=Me You][/drop]
Example Output

(If you want to see the exat reference: http://www.weforums.com/forums/misc.php?do=bbcode#drop

What sections would i copy these codes into in the add BBC Code form on my forum?

I was also wondering how I can add my Google Adsence code into my sig without enabling HTML?

Thanks.