"Change MS Office type file settings from those indicated by OpenOffice, to MS Office"??? What, change "MS Office type file settings" to MS "Office type file settings"? What's OpenOffice got to do with it; are you changing from MS Office, "via" OpenOffice, to MS Office? Or WTF are you gibbering about?
File-type associations in Windows are changed in the Explorer's Tools / Folder Options dialog. Select the "File Types" tab, scroll down to the file type you want, click "Change..." or "Advanced".
HTH...