wireless card can't detect after reboot

hello everyone:
i use damnsmalllinux(the kernel is 2.4.26) in a flash.the system already contains
the driver prsim2_usb.My wireless card is linksys WUSB11 . 
i add the command: 
    'modprobe prism2_usb prism2_doreset=1'
    'wlanctl-ng wlan0 lnxreq_ifstate ifstate=enable' 
    'wlanctl-ng wlan0 lnxreq_autojoin ssid=default authtype=opensystem'
    'pump -i wlan0'(the pump is the same as dhcp in damnsamlllinux)
when the system start ,the wireless card works very well.

But! when reboot the system .the system can't not detect the device. 
i use lsmod to show the modules. the kenerl don't load the prism2_usb modules.
so I don't know what's wrong?

And if i disconnect the usb wireless card and plug it .then start the system .
everything is ok.

Thanks!