You are probably thinking of the WRT54GL as the versions of the WRT54G after v4 use Vxworks and thus must use a micro version of DD-WRT which is limited.
Given you are not elaborating on the tool you are trying to use with your WRT, it is hard to figure out what you are trying to do. Are you trying to use it as a drone with kismet? If so, there are many tutorials around.



