rollover bar not working - html problem

[celeste]

OK, i made a navigation bar with rollovers - started in photophop, completed and sliced up in imageready and saved as an html. as opened in dreamweaver then previewed in a browser, it works perfect. but, when i try to put this image into a layer, i lose all my rollover images. i get the rollover hand, but not the rollover image linked to it. why is this happening and how can i fix it?

thanks!

[domedia]

This is a technical question, and we can't possibly guess the reason to it happening without seeing parts- or all of the code. :)