If your talking about folder paths then,
Wine creates its own little " C:\ " drive.
On Ubuntu its " /home/.wine/ " or something to that effect, the " .wine " folder is hidden by default.
This might be related to your question. https://help.ubuntu.com/community/Wine
Edit: Please remember that mIRC is not meant to run on Wine, and that certain parts of mIRC are disabled when running under Wine.
4.Added support for detecting Wine so that mIRC can use alternative
code for features that need it. Around fifteen separate workarounds
were implemented. Features that could not be made to work reliably
(richedit editbox support and playing mp3 and mid files) are now