I think I've used this before but it has been a while so it may not work for you.
converter
To use it:
- download the executable file from the above link
- when the download finishes, execute the wp6rtf.exe file and it will install
- To open the .wps file, open Word
- Go to File - Open
- In the 'Files of Type' drop down box, scroll down to 'Works 6.0 (.wps)' or Works 4.0 (.wps) and select
- Now browse to the folder that contains the .wps files you would like to open
- The files should open normally
- At this point you can go to File - Save As and click the drop down 'Files of Type' button as before and choose Word Document (.doc) which should be the first choice.