[Wine] Raw USB mass storage device access

[General_Failure]

Hello. I am posting here because I can't find a simple answer for something I want to do.

I want raw device access to a USB mass storage device. A CF card to be more precise. The card is not set up in a way Linux can recognise as a mountable volume.
I just want to know two things:

how can I point Wine at the block device, and how can I give the program read/write access to it?

I know it would have been easy a long time ago, but Wine has changed a lot and I'm a little lost with its advanced configuration now.