[PDF-Basics] Editing text in PDF

[compass claims service, inc]

I have a document converted to .pdf from Word.  Since then, I have lost the original Word document.  I need to edit a line of text on the cover letter.  Is there a way I can either edit the text itself, or "white" it out somehow and insert new text over it so that I don't have to recreate the entire cover page?  It is a small amount of text.  I just need to change [EMAIL PROTECTED] to [EMAIL PROTECTED]   K. Baare