Can somebody help me please im am following the wep cracking reloaded tutorial as on 'smallnetbuilder' website using an Edimax EW7318-USG and BT3 Beta

I unplug the adaptor enter:
modprobe rt73

Plug it in and enter:
ifconfig rausb0 up

enable PRISM headers, allow transmission while in monitor mode, and put the card into monitor mode:
iwpriv rausb0 forceprism 1
iwpriv rausb0 rfmontx 1
iwconfig rausb0 mode monitor

i follow the steps and it comes to aireplay-ng and the ARP attack i type:
aireplay-ng --arpreplay -b [AP BSSID]
-h [client MAC from airodump] rausb0
Airplay works as it should to the point of reading packets and the numbers shoot up however no arp requests or packets are sent

I know there are probably better ways to do this now however this is the first tut i ever used to crack my wep key on my test network on another card, and i'd like to do it this way.

I'm just stuck at this point and can't find much to suggest whats wrong can somebody point me in the right direction please.

Thanks for taking the time to read this and help in advance much apreciated.