I think this page has the latest instructions-

http://doc.slitaz.org/en:guides:start

http://doc.slitaz.org/en:guides:wifi-easy

thanks guys, tried that but still stuck
did
tazhw detect-usb..
belkin 54g usb network adaptor
sh: rt73usb-firmware: unknown operand
*loaded module: rt2500usb
rt73usb
sed: unmatched '/'
but fall down at the next step..
tazpkg get-install get-wifi-firmware
due to bad address mirror.slitaz.org (prob cos i have no network?)
any suggestions?

If  computer with slitaz has no wired ethernet connection with internet access to setup wireless download the files with a computer with internet access , copy files to common media ie. floppy disk,flash drive, cdrom, etc. and transfer/install on slitaz computer. 

To setup a wireless usb adapter you need: usbutils.tazpkg , libusb.tazpkg , libusb-compat.tazpkg , linux-wireless.tazpkg plus firmware specific to your wireless chipset 

slitaz does not have wireless firmware on the repos. A get script for firmware is provided to download/extract/install but requires the computer to have an internet connection.

Download tazpkg here:  http://mirror.slitaz.org/packages/3.0/

To install :

Logon to slitaz as root password is root

Open xterminal:  #tazpkg install full.path.and.name.tazpkg

With wireless adapter plugged in type lsusb in xterm 

Post the complete line with of the wireless device.

I will post instructions on download/extraction/installation of wireless firmware after you post the ID info from your wireless adapter.

have same problem but instead of usb have old pci intel abg wireless adapter.  I need to get wireless working too, no wired ethernet available.  Someone sent me a taz package but I don't know where to install it in cooking version of slitaz.  Any help would be appreciated

@techkathy, have you tried

tazhw detect-pci

from the command line as root? That should provide you with information on your wifi hardware, as well as, if available, load the correct drivers. Not sure what you mean by 'where to install it' but this is how you can install a something.tazpkg file (if that's what you have for the wifi adapter),

Using command line, as root
# tazpkg install filename.tazpkg

This will install the package. However, if that pacakage has dependencies that are not already installed, tazpkg will attempt to connect to the repos and download the dependencies. But since you don't have Internet, this won't work. If this is the case, you can follow @mojo's instructions above, i.e. download the dependencies from the packages database on this forum, then copy and install using the command prompt.