I agree that my response was harsh but it doesn't exactly take much to find whether or not a DO can actually become a neurosurgeon rather than posting a question on a forum that has been asked hundreds of times.
In fact, if you google "Osteopathic Neurosurgeon" it will come up with plenty of evidence that it is entirely possible.
http://lmgtfy.com/?q=Osteopathic+Neurosurgeon
Now, anyone who has been on the DO forums for any period of times knows I am completely helpful when someone has already put in some of the legwork on their own, or even when someone has a question of their chances. The fact that the OP came into the forum with a 3.9 GPA and their recently revealed 26 MCAT and asking a question over whether it is possible to specialized in a certain field, you can see why one would jump to the conclusion that they are trying to use DO as a backup and a spur of the moment one at that. It is just entirely frustrating when people come scrambling for answers in the DO forum because for whatever reason they didn't think they could get into their dream of an MD school. It has since been revealed that may not been the case but its still frustrating and I apologize to the OP.
Bad day, bad mood, whatever I still have a short fuse when it comes to things that are easily googled or found in the FAQs that say read before posting at the top of the forum. There are dozens of match lists there. Now to say I was entirely unhelpful is also debatable. In fact I went out of my way to look up which programs currently offer osteopathic neurosurgery residencies in order to give the OP an idea of where they should look. Now the possibility that it is lost amongst my rant is entirely possible, but it is there.