How do I edit text on a pdf file?

With Acrobat 6 Professional -Select Tools > Advanced Editing > TouchUp Text Tool
Next, click on the text line where you want to do an edit.
Click-drag to select a string of characters and let your fingers walk the keyboard.
Or, just start where you've placed the cursor.
You'll find it somewhat awkward. PDF is not a word editing/processing
format. If desired edits are few and simple the TouchUp Text Tool
will suffice. If the desired edits are more than you really want to return
to the authoring application (word processor, whatever) to make the edits.
Then produce a new output PDF.

Note that the above presumes the PDF does not have security applied that prevents such edits.

Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} Go to http://www.onlinedocumentconversion.com/ register, upload and convert.

I use a much more streamlined product called Infix that is a heck of alot cheaper and much better than other third party packages.

I work for a company where our brochure may need to be slightly changed for different european markets and have tried many third party pdf editors such as Nitro PDF
Although you can edit the text in all of these, the interface and method is auckard and unorganised.
When i came across Infix at a last dash before submitting to a design company to do it for us, i was blown away buy the ease of use and functionality
http://www.iceni.com/pie%20label%20%28short%29.htm
That goes to a video showing its ease of use and this is product's main page
http://www.iceni.com/infix.htm
I bought a 3 save licence straight away and have sought a full one now and i hope i can convince others^_^

P.s, no they did not hire me to write this:-)