Convert WPD to TXT

Generally speaking, you can create a plain text file from pretty much any document simply by using the copy+past method to indows Notepad or something like that. For wpd to txt conversion you will have to use Corel WordPerfect or any software that supports WPD format. Most word processors should actually offer saving to plain text by default, albeit at the cost of any formatting, so the difficult part will be finding one that supports your version of WPD format.