复制下面的信息到记事本中，然后另存为*.reg格式的文件，然后双击运行即可。WindowsRegistryEditorVersion5.00HKEY_CLASSES_ROOT.doc=Word.Document.8ContentType=application/mswordHKEY_CLASSES_ROOT.docOpenWithListHKEY_CLASSES_ROOT.docOpenWithListWordPad.exe=HKEY_CLASSES_ROOT.docPersistentHandler=98de59a0-d175-11cd-a7bd-00006b827d94HKEY_CLASSES_ROOT.docShellNewHKEY_CLASSES_ROOT.docWord.Document.6HKEY_CLASSES_ROOT.docWord.Document.6ShellNewFileName=winword.docHKEY_CLASSES_ROOT.docWord.Document.8HKEY_CLASSES_ROOT.docWord.Document.8ShellNewFileName=winword8.docHKEY_CLASSES_ROOT.docWordDocumentHKEY_CLASSES_ROOT.docWordDocumentShellNewFileName=winword2.docHKEY_CLASSES_ROOT.docWordPad.Document.1HKEY_CLASSES_ROOT.docWordPad.Document.1ShellNewNullFile=以下是新建EXCEL文档的注册信息(.xls)WindowsRegistryEditorVersion5.00HKEY_CLASSES_ROOT.xlsContentType=application/vnd.ms-excel=Excel.Sheet.8HKEY_CLASSES_ROOT.xlsExcel.Sheet.5HKEY_CLASSES_ROOT.xlsExcel.Sheet.5ShellNewFileName=excel.xlsHKEY_CLASSES_ROOT.xlsExcel.Sheet.8=HKEY_CLASSES_ROOT.xlsExcel.Sheet.8ShellNewFileName=excel9.xlsHKEY_CLASSES_ROOT.xlsExcelWorksheetHKEY_CLASSES_ROOT.xlsExcelWorksheetShellNewFileName=excel4.xlsHKEY_CLASSES_ROOT.xlsPersistentHandler=98de59a0-d175-11cd-a7bd-00006b827d94以下是powerpiont幻灯片文档的注册信息（.ppt）WindowsRegistryEditorVersion5.00HKEY_CLASSES_ROOT.pptContentType=application/vnd.ms-powerpoint=PowerPoint.Show.8HKEY_CLASSES_ROOT.pptPersistentHandler=98de59a0-d175-11cd-a7bd-00006b827d94HKEY_CLASSES_ROOT.pptPowerPoint.Show.4HKEY_CLASSES_ROOT.pptPowerPoint.Show.4ShellNewFileName=powerpnt.pptHKEY_CLASSES_ROOT.pptPowerPoint.Show.8HKEY_CLASSES_ROOT.pptPowerPoint.Show.8ShellNewFileName=pwrpnt11.pot