Files with the .DOC extension contain formatted text documents stored in a proprietary binary format of Microsoft Word. Storing format was different for each version of the Microsoft office suite. Currently, it has been displaced by an open format based on XML, in order to provide mobility (DOCX).
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the SXG file after converting to DOC may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from SXG to DOC to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting SXG to DOC does not meet your expectations, you can simply try to find on the Internet a different version of your file in SXG format, properly converted to a DOC file by someone else. If this fails, use the information provided in the further part of the website.
Unfortunately, if after performing the two previously described steps (trying to find your SXG file converted by someone else, and the attempt to convert it to DOC on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the SXG file in its original format (without conversion to DOC file). Such a solution will be difficult to implement, but it certainly will give the best result.