Read Alien Bob's Installing Madwifi on Slackware
You are leaving out a lot of necessary information to help you.
You only need to edit /etc/rc.d/rc.inet1.conf properly to use
wireless in Slackware-12.0 and 12.1. I've done this on a number
of comps and it works fine.
If you can't get it fixed reading that, then start by posting what
you have done to which files, as well as the contents of the files
that you've edited. All I do for Atheros chipset cards is install
Alien Bob's madwifi
package, then setup /etc/wpa_supplicant.conf per
his tutorial, and restart the services or reboot the laptop.