How can you edit a JPEG file?Watch
I will try those S/W tonight and try the method of scanning and editing.
I have no choice but to use photoshop
It's a manual and I need to edit it.
If the backing is coloured, and as you say you have photoshop (or another graphics programme (maybe even paint would do it)) just use the eyedrop tool (is that what it's called? -takes the colour of a point you click) to get the colour and go over the area of text that you want to change. Then you can put a text box over the area and write in your edit.
A program that will (apparantly) convert a jpg to a pdf (which you can then copy & paste into word and edit to your hearts content)