Importing PSD files hurts the quality, why?

If I save the PSD file to a PNG, and import the PNG, it looks perfect. However, if I try to import the PSD file into flash, keeping everything the same, all dimensions etc; it gets ruined. The picture quality is 20% worse. Now if I highlight the bitmap in the library and make it the best quality by selecting Jpeg (100%) or PNG, it still looks the same. Nothing I do can enhance the quality. Why does this happen? Any ideas?

Ty :ear: