Does anyone know the ACT/GPA stats correlation for 2009?

<p>I know they have some kind of calculation. For instance, if you have a 4.0, unweighted (higher weighted) with tough classes, what ACT do you need? Also, will high SAT II and AP scores help or be irrelevant? I saw a calculation for the SAT but not for the ACT. I understand that last years charts may not apply.</p>