Faq: many steps
GeoQO is built on many many components that already have been written by other people. That's one of the reasons it was developed so quickly: it was built on the shoulders of giants. Unfortunately, this means there is more to install ahead of it in order to get it up and running.
There is an Windows Install script, and a check-dependencies.pl script for all OSes that help figure some of the nitty gritty details out.