To run an optimization model these are the steps
you need to follow:

1) Input Data
You must first click on the "Input Data" button
at the left side of your screen. A page will 
appear on the right side with two options for
you to choose from. 
	* Run an existing example. 
		If you choose this option you MUST 
		pick an example from the list.
	* Create an example of your own. 
		Here you need to input the number
		of streams invovled in your network,
		number of components involved, and
		number of tratment units available.
When  you have chose your options, click  on the
"submit"   button at the end of the page. 
If you chose to run a model you can go to step 2.
If you choose to create you own example, a second
input page appears. Here you will be asked for 
the names of you pollutants, theri composition 
and flow into the system, as well as the recovery
capacity of you treatment units and the outlet
composition specification per polllutant.
You have to fill in ALL of the information you
are asked for!! When you are finished click on
the "continue" button.
2) Run GAMS
Once you have inputted your data and what 
results to see, you are ready to run GAMS. 
To do so, click  on the left  side button 
"Run Optimization". You should be able to 
see how the interations are taking place. 
When GAMS has finished, the phrase 'Normal
Completion' should appear on the very end
of your right side window. Please be patient 
and wait until you see that GAMS has finished,
otherwise you won't get your results.
3) View Results
When GAMS has finished the optimization and 
the 'Normal Completion' phrase appears, you 
are ready to see the  results the model has 
generated with your input data To see these 
results click on the "Summary of Results" 
button at the left side window. Here you can 
see the information on the model you have just
run, as well as the results the interface found.
You can take a look at the optimal network by
clicking on "SEE NETWORK" button.
Make sure to click the "refresh" button on your
browser.