Hiho Folks out there

I would like to create a new driver for a rfid scanner (olimex) which is plugged in to an usb port of a raspberry pi. My Idea is, that I could use the Scanner and the new Rfid scanner. I copyed the scanner driver renamed it made some customisations and copied it on the raspberry pi. I tried to install the driver but then I get the follwoing warning:

WARNING posbox openerp.modules.loading: invalid module names, ignored: hw_rfid.

Does anybody have an Idea how to solfe that nasti thing?

Thanxs in advance for your time and answers.

Zoebi