PC and 4 ARDUINO's in network

ARDUINO would have 16x2 LCD and 2 buttons.
Not require communication between the arduino's, just between the PC and Arduino.

I have WiFly shield from Sparkfun. Is it useful for this?

I have not expiriance vith visualisation. Is there a way to make a visualization on Excel, maybe with VBS.
Because the data is stored in Excel spreadsheets.

Thanks.