http://bugs.winehq.org/show_bug.cgi?id=11358
--- Comment #11 from Ilya Chernykh neptunia@mail.ru 2008-12-10 02:08:10 --- So, black square, yes?
It should be Basic prompt once you start the virtual machine.
In fact it displayed but out of the emulator window area. Try to move it to the left-right corner of the screen - the Basic may partially appear in the window.