Okay, so I am on my laptop, and I am trying to watch a DVD, it is NOT burned.

A pop-up came up, and I installed everything, but now it says that there's something wrong with the DVD Region or something? The one I am currently using is FREE, I need to know if I change it, will it cost anything? It doesn't say... all it says is:

Current region Code- FREE
Region's Supported by this Disk- USA, Canada
Are you Sure your DVD Drive's Region Code?


Thanks!!!
I am on a "Windows Vista" if that helps???