you'r great, Rich,
your linl leads to this precious comment :
r8192s_usb (supported devices)
Supports USB devices based on the RTL8188SU, RTL8191SU and RTL8192SU chipsets.
Introduced in Linux 2.6.31,3 enabled at linux-2.6 2.6.32-10.
Superseded by r8712u and removed from mainline at Linux 2.6.37.4
wl..r8712u installed and seems to work perfectly !