If you have a wireless network Card (802.11b) either
built in (Symbol device) or part of an expansion pack
(IPAQ), is there any way to "control" the card ie. switch
it off when it is not necessary so that battery power can
be conserved on the device - from Evb?
Alternatively or maybe similarly, is there any way from
evb to control the backlight settings of for example an
ipaq?

Thanks!