i have a levelone usb-wlan adaptor and wanted to use it with my friends Knoppmyth-box which i installed for him....however i have some problems to do so:

I found out that this adaptor needs the prism2-usb module provided by linux-wlan-ng but it is not included in R5D1 so i tried to install with apt...but apt does not want to install linux-wlan-ng....no sources for this package! After finding some sources which provide linux-wlan-ng apt comes up with warnings and wants to install new glibc and a bunch of other important packages so i thought thats not safe and decided to ask first!
How do i get this prism2-usb module safely?? Can anybody who uses the prism2-usb module tell me how to achieve this or provide a link for this module???
Thx for any help in advance!
Supergong