From Wine-Wiki

[edit] Introduction

dosdevices is where wine stores device info. This page is an experiment in case it requires more.

[edit] Forum Comments

to create a link to your cdrom for wine:

ln -s /mnt/cdrom "~/.wine/dosdevices/d:"

You can also add any serial device :

ln -s /dev/ttyS0 "~/.wine/dosdevices/com1"