[Wine] Opening wine-based applications from Firefox?

[lifemonster at googlemail.com]

Like all decent browsers, Firefox offers the possibility to link file
types to specific applications.
However, there seems to be a serious problem preventing the linking of
file types to wine-based applications.

Consider the following: you want Firefox to open filetype xyz with the
wine-based application prog_xyz.
In the download actions you can specify the complete path to the
application, something like:

/home/my_userid/.wine/drive_c/dir_xyz/prog_xyz

but Firefox then discards the complete path, only retaining the actual
program name 'prog_xyz'.

Of course, this doesn't work for without the actual path information
Firefox is unable to find the program.
By the way, It doesn't bother to tell you that - it just prefers to do
nothing instead :)

My question: does anyone know of a way to feed Firefox the complete
filepath to the correct application?

Eric