How do I download and launch a JNLP file in CentOS?

view story

http://unix.stackexchange.com – I'm using Amazon's GPU cluster to experiment with some HPC java code on CentOS. The Java application is in JNLP format and has a GUI. I've followed Amazon's getting started video], but I'm not sure how to use a web browser or otherwise download the file. Secondly I'm not sure how to launch this file since it requires a GUI. Any assistance would be appreciated. (HowTos)