Norton Internet Security newbie question

Hi,

 

A local store near me has a few copies of NIS 2009 (the 3PC 12 month version) on sale for $5.00.

 

Is this product still supported with current anti virus updates?  And ... does it play nice with Windows 7? I have 2 WinXP and one Win7 machine, so this could be a great bargain.

 

NIS 2011 retails for around $80 here in Australia, so this could save me quite a few bucks on buying the current version - unless there's a compelling reason why I shouldn't.

 

Thanks guys.