By staying in one place, I'm assuming that you 
mean that the image stays only in the image that 
your screen capture software takes.  i.e. the 
image looks fine when you take a capture using 
Hypersnap or some other image software, but when 
you try to open the image in Photoshop, you get a 
black square where the DVD image use to be.  
Example: top picture below, using the Hypersnap 
trial download, where there is a black square 
where the DVD image use to be.  (the picture in 
the background is my current desktop wallpaper 
^^)   

The second image below is using WinDVD screen 
capture feature which creates a bitmap image in 
the capture folder located in the WinDVD program 
folder.

I'm still not exactly sure on how you are trying 
to create screen caps.  If you are still having 
trouble, post a brief run down of the steps you 
take, and with what software you are using, and 
I'm sure someone will be able to assist you more.


Fenris