Read Only Documents Error in Windows 7

I am using a dual-boot PC with Windows XP and Windows 7. When in Windows XP, I can open all the documents without errors on Compatibility Mode. I can edit and save the documents in a normal way. But when in Windows 7, the documents can be open as Read Only Documents. I cannot edit or save any changes with it. I already unchecked the boxes in the File Block Settings in the Trust Center. Sadly, the settings for both MS-Word 2003 and MS-Word 97 binary documents and templates do not have a check box to select for saving. I even take the ownership of each files but that doesn’t solve the issue. All my files can be open with MS-Word 2010. Does anyone have an idea on how to resolve this? Thanks.
