Hi
Thought I might share this. Used it a few times and found it really good.
It's a free online PDF editor (for private use)
You can add text, pictures, lines and stuff.
Also lets you import an existing PDF and add/remove pages or move them around.
(I'm not related in anyway to the website/company. It's just helped me a few times and I noticed deal http://www.ozbargain.com.au/node/101298 appeared quite popular.)