firmware hotplug problem

Hello all!
I've recently setted up a firewall-router with an adsl connection via a
hamlet 640s usb modem.
The modem doesn't cause me trouble if I hotplug it, but if I cold plug
it the accessrunner driver can't find the firmware:

cxacru 1-2:1.0: firmware unavailable (hotplug configuration problem?)

Now, the issue is that for security reasons I disabled the modules in
the kernel, so every time I boot up the firewall I have to disconnect
and then reconnect the modem by hand to make it find the firmware.
That's quite uncomfortable, since the firewall is in a place not really
easy to reach.

Has anyone suggestions to solve my issue?
I've searched in the archives without luck :(

I add that I run debian sarge, with a custom (obviously) 2.6.10 kernel
on a pentium 133 with a 1.3 Gb HD

/etc/fstab:
proc /proc proc defaults 0 0
/dev/hda1 / reiserfs notail 0 0
/dev/hda2 /home xfs defaults 0 0
/dev/hdc /media/cdrom0 iso9660 ro,user,noauto 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto 0 0

thanx for any suggestion
davide

PS. I tried adding the firmware into an initrd, without success.

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