To convert your stuff to .pdf, your best bet is OpenOffice. It is really a great piece of free software. Be very careful with two things:
1 - If you need 100% compatibility wiht MS Office, say, exporting your resumè as a .doc, OpenOffice can mess thing up and when somebody tries to open it with MS Office, everything will look like... well... you know, different
. In this case you will have to use MS Office either booting into Windows or trying to run under Wine or Crossover Office.
2 - Since you are using Gentoo, don't try to emerge Open Office. I did it and the time it took is not even worthy. Get the binaries
There's nothing for Linux as Adobe Pagemaker yet. Adobe started a project for Linux called Framemaker, but is has been cancelled: