Check that the orinoco and orinoco_cs drivers aren't loaded (with "lsmod", remove them (if necessary, with "rmmod"), and blacklist them for good measure), make sure the hostap drivers are loaded "(modprobe hostap"), and lastly (or maybe firstly), check what ifconfig and iwconfig say on the matter.
lsmod <- look for things with "orinoco" in the output
rmmod orinoco orinoco_cs <- if present in the above
(blacklist modules, if you so desire)
modprobe hostap <- load the correct modules, if necessary
iwconfig <-check to see if the interface is present