I managed to get it working.
For anyone who may stumble upon this, I combined you guy's advice and did this:
su
tazpkg get-install wireless-install
tazpkg get-install broadcom-wl
previously i had installed ndiswrapper, but I found one specific for slitaz:
tazpkg get-install tazndis
after that, i went into the wireless manager and changed my module to b43 (it was rtl8180 after i did the first 2 commands. now i see that even though i have installed b43, now it's back to rtl8180. dont know whats up with that).
more simply put, i selected b43 from the modules list and clicked install. once that was done, the wireless manager scanned for networks and all the wifi networks were displayed. I connected but the icon on my OS still has a red x on it.
it works. hope it helps someone else as well.