Puget Systems, AKA Puget Custom Computers, headquartered in Kent, WA based PC etailer will begin offering free Windows 7 upgrades to customers who buy new Windows Vista PCs starting Sunday, according to their website. Its upgrade program will predate Microsoft’s own upgrade program by months. Microsoft’s offering is scheduled to begin on July 1st. Here’s what their site says: Puget Systems is pleased to announce FREE upgrades to Windows 7 on select purchases starting 3/1/09. Customers who purchase a qualifying