Sorry if this has been covered already

I'm trying to use 1.41 on a Dell Inspiron 5100 laptop running Win XP SP 3. When I put Nestopia in full screen mode, I lose the ability to use any input devices. The program continues to run, but I can't actually do anything. I don't have this problem with Nestopia 1.40 official on the same screen, strangely enough. I also have no issues with my desktop running 1.41 in full screen (Intel Quad Core, Win 7 64 bit)

I tried copying my 1.41 config to my 1.40 directory and everything works fine so it's not an issue there.

Any help would be greatly appreciated