I posted this to the forum for Fallout Tactics, but for the sake of thoroughness I'm reposting it here.
Apparently people on the WINE forums have gotten it
to work after the recent releases of WINE broke this game (as well as
several others) by running it in windowed mode. Using "Emulate a
Virtual Desktop" doesn't work.
1) Go to "Run Command..." in the Programs menu.
2) Click "Browse...." and navigate to where BOS.exe is located.
3) Type "-window" (without the quotes) at the end of the path.
At the end, the entry in the Run Command window should look like this:
"/Users/(your user name here)/Library/Application Support/CrossOver
Games/Bottles/winxp/drive_c/Program Files/GOG.com/Fallout
Tactics/BOS.exe" -window
Hitting "Run" runs the game just fine. The only disadvantage is that
you're locked in 800 x 600 resolution (at least, that's what I think it
is) and there's a slight performance hit, though it may be just my own
perception of things. But in windowed mode the game works as well as it
did before, in my testing.
Oh, and I'm on CrossOver 8 running in 10.6.1, on a 2.16 Ghz C2D MacBook Pro. To run the game in full screen you'll have to revert to an earlier 7.x release of CrossOver.