http://explore.live.com/windows-live-skydrive is free or if you have a MSN Messanger account https://skydrive.live.com/ and cloud based, so If you cannot afford Microsoft Word 2007 or 2010 Thanks to the cloud you can still create the required docx files to make your PB's
when you are logged in create a new document

when you have done what you need to you may be wondering how to get it from the cloud to your PC..
highlight the file and click the (i)

then choose download

then you can move it to you PB folder and compile it.
Hope thats helps if skydrive is new to you...