WordStar is an early word processing software that has now been discontinued. Some people still have text files in WordStar format on their computers. Converting those files into Word format requires only a few steps. Up until 2003, Microsoft provided a converter pack to help this conversion. If you want to convert WordStar documents to Word .docx format, you will have to first convert to .doc format. All you need do from there is open with Word and save in the format of your choice.
Download the WordStar converter pack. This can be found on Microsoft's server (see resources.)
Run the downloaded converter pack. It automatically will unzip the files within it.
Copy the files of the converter pack, including the readme text file, into the Textconv directory. The Textconv directory can be found at C:\Program Files\Common Files\Microsoft Shared\Textconv directory.
Right-click the WordStar document you wish to open. In the drop-down menu, select "Open As." In the dialogue box prompted, select "Microsoft Word." The WordStar document will then open in Microsoft Word.
Save the opened WordStar document as a Word Document. To do this, click the File tab at the top left corner of the window, and select "Save As." A dialogue box will open where you can choose to save the document in different Word formats. If you are working on Microsoft Word 2007 and newer, you have the option to also save the WordStar document as a .docx file.