Rubies Square Network's System Requirements Checker help page
To find out your system's information,
Click the start button, then select the run option, type dxdiag in the dialog and then click 'OK'
You should then see a screen similar to this, the proccessor and ram information has been highlighted in this example.
To see how much video memory you have, click the display tab, then look in the area circled in this example.