missing wptopdfdlg

I'm trying to write a program in delphi 2007 which uses both wptools and wpdf, as stated in the wptools manual I have attempted to insert the following code to open a dialogue for the user to export a pdf, however delphi says it can't find the file wptopdfdlg.dcu, I have searched my hard drive and your website and can find no indication of where this file is, is supposed to be, or can be found. I'm not sure what I'm doing wrong.

uses WPToPDFDlg;
var pdfcreate: TWPCreatePDF;
begin
pdfcreate := TWPCreatePDF.Create(Self);
pdfcreate.EditBox := WPRichText1;
try
pdfcreate.ShowModal;
finally
pdfcreate.Free;
end;
end;

Thanks for the response. I don't know why, but it's not installing those files. I've looked in the install folder, as well as run a search on my hard drive, and re-installed wptools several times, those files are not being created.

Thank you for all the help.