You have to enable to the USCi. thingie on one of the WINUAE options. Do this after you load your config and before you start to emulate or it won't work.
I'm nor able to view WINUAE at the moment so what I wrote in the 1st line is probably wrong, It's somthing there anyway - somone else will tell you !
Hell, just enable EVERYTHING to be sure...
piv :pissed: