format not known

Microsoft Office Word

Since I installed Word XP, I have had the errors noted
below:

Whenever I try to copy text from WordPerfect to Word I
get the following error:

Input file is not the format specified

Also, if I try to open a Word document in Wordperfect, I
get the following error:

Unknown File Format
What version of WordPerfect are you running? Try saving the file from
WordPerfect as a Word document, or a RTF file ( Rich Text Format), then open
in Word.

Andre Da Costa
Jamaica W.I.