Just as a note, Crossover/Wine would be much better if it could be made to work. When you run Parallels (or VMWare, or Virtualbox, or libvert or any of those), you're actually running an entire copy of Windows in addition to your main OS, with all of the resource usage that entails. Wine/Crossover is just a user-space compatibility layer, so it's much cleaner and can be native speed when it works.
And there should be a way to make it work, you can run huge complex games in Wine now... but we may need someone to come along who's more adept at configuring Wine than I am.