I have some programs (most unpacked by myself) that work correctly in Win9x but give a "App failed to initialize correctly" in Win2000. What bothers me is fact that the original (packed) app runs correctly in Win2000. Is this somehow related to the imports table?
Is there any way to fix the exe image?

maybe some api exports are not known on win2000, or maybe you have to convert the pe format (look at pe editor from yoda)