FYI, I tried babaschess on the 2010 codeweavers (not games) demo and it works.
I went to unsupported applications, chose other application, and chose the babas install download as the installer file.
Then I selected a winXP bottle and named it babaschess. The first install attempt stalled, but the second try loaded fine.
Note, the pieces didn't appear at first. But, I went to preferences and selected different pieces (e.g. winboard vector)
that did appear. Finally, I downloaded the babas graphics pack into the same babaschess bottle and it has several bitmap pieces that work too.
It looks good, except the pieces are not quite as good as what I normally use on Windows. Still tweaking though.
So far no crashes or issues after playing 3 games. I'm using a OS 10.6.3 with an intel core duo.