That's just it, your Sony is new, and thus probably isn't RPC-1. RCE disks check to see if the player is RPC-1, and will then not play, but in a PC, you can use a program such as DVD genie to specify the region of the disk, and then you can play it. You must have made your 116s region free. Why did you post this here? it belongs in another forum.
Anyway, read the faq at
http://faq.inmatrix.com
for more info on RCE.

[Edited on 9/17/01 by dhc014]