I'm not sure I understand what you mean by "not sure how to open email
attachments in Word"...
If someone sends you a Word file as an attachment you should be able to
double click on it and open it up.  If someone sends you a WordPerfect
attachment you will probably have to save it first then open Word or
WordPerfect and open the file.  To save a WordPerfect document in Word
format, from WordPerfect click on File, Save As, and at the bottom of the
dialog box change the file type to MS Word for Windows 97/2000 (that's what
my WP 9 says, it may be slightly different in higher versions of WP).  Be
sure to put a .doc extension on it when you save it.  Be warned - some
formatting changes may be made to your document.  Usually no big deal, but
if it is a large, complex document you might want to pull it up in Word to
see how it looks before you send it to someone.