[Wine] Using xdg-open by default under Wine

[kaeza]

Hello.
Is there a way to make Wine use the xdg-open program by default when opening file types it does not know about?
For example, I have XArchive with RAR support, but don't have WinRAR installed on Wine.
I want to make Wine use xdg-open, which will call XArchive which in turn will use the `rar' program to operate on the file.
Any help on this topic?