On Parallels there is a way to make Maple Story work with a virtual machine.
You have to run the Registry Editor (regedit from search)
Find the following path:
HKEYLocalMachine > Hardware > Description > System > VideoBiosVersion
Edit the registry key VideoBiosVersion to make it blank. Then save it.
I tried this with Crossover but it doesn't have all the same registry keys. Can someone who is a codeweaver expert look at that trick and see if there is a way to get MapleStory to work with Crossover?
Thanks!
~Paul