hi,
You must have the below Requirements for installation of NGL3.1.3 which you can find in "NGL SOURECFORGE".
You must have jdk 7, postgresql 8.3/8.4.
first install java, then postgresql and finally install NGL3.1.3.
Follow the step by step of installing NGL3.1.3 in Documentation .
You Can Download NGL3.1.3 from
https://sourceforge.net/projects/newgenlib/files/NewGenLib/