No problem on the highjack...this thread has pretty much run its course anyway.
You can test your scope at the ranges you are planning to shoot to see how much parallax exists.
This article on the basics may be helpful to you:
Parallax in Rifle Scopes
This thread goes into more detail (it has some good stuff in it):
The Optics Talk Forums - What exactly is parallax anyway?
Note the comments regarding the need for parallax adjustment beyond 9X (2/3 down in the thread). Seem to me that 10x is right on the edge of needing adjustment...depending on what you want to achieve (distance, accuracy, etc.).