Best thing to start with is learning how to use google and other crawlers.
Searched for "debian iwconfig package", first hit was http://wiki.debian.org/iwconfig
If you search for a certain tool and don't know the package name, try this: http://www.debian.org/distrib/packages#search_contents
You eventually find out that wireless-tools contains the following software:
/sbin/iwconfig/
sbin/iwevent/
sbin/iwgetid/
sbin/iwlist/
sbin/iwpriv/
sbin/iwspy
The only possible downside of adding wireless-tools would be conflicts with allready installed packages. Apt (apt-get, aptitude) would inform you about this conflict, so you can avoid it or decide what you need more.
http://packages.debian.org/lenny/wireless-tools
Check the dependencies, it isn't much. Sure, those dependencies also have dependencies, but most of them should allready be installed on your system.
The best thing about Linux is, that all those little infos are free, so learn how to use this advantage ASAP.
Your best friends from now on are:
You should also consider building software from source instead of asking for .deb packages. This way you keep package management a comfort, not a dependancy.
Don't get me wrong: I don't mind people asking questions and I don't mind answering. I just want to provide you with some basic tools to do such research on your own from now on. It seems to be easier and quicker than asking in forums, for it seems pretty hard to ask questions the right way.
I'm so meta, even this acronym
