You should probably ask your question on the Stanford NER mailing list.

The instructions describe a command line mode, so you don't have to write any code.

If you want to write code, it looks like they have interfaces for many languages, like Python, PHP, C#, etc. Here's a man page showing code in Perl:

http://search.cpan.org/~zarquon/Text-NLP-Stanford-EntityExtract-0.06/lib/Text/NLP/Stanford/EntityExtract.pm

There's also an on-line demo but the amount of text it accepts is pretty small.

Here is a link to the Stanford ER demo code in Java. It's quite simple.

http://nlp.stanford.edu/software/ner-example/NERDemo.java

I like more Freeling. It has very good accuracy.

http://nlp.lsi.upc.edu/freeling/