If you buy a computer after 26 June 2009 is likely to have the opportunity to upgrade to Windows 7 "no cost". Not all computers purchased within the dates marked with the free upgrade option, the manufacturer may choose a different strategy. You will find information on the official upgrade to Windows 7 from Microsoft .

As we read the official FAQ on the Microsoft Windows 7 ;

The period of eligibility of the program will be from 26 June 2009 to 31 January 2010. No obstante, in the event of nuevos equipos of shopping, it is possible that the computer manufacturer ofrezca period: one more glance this program inside the range of dates. Consult with your computer manufacturer to Get to the dates and information on Ringtones redeem the discount.

This means that if you have a Windows Vista installed and have not upgraded to Windows 7 give you fast, because on Sunday 31 January 2010 is the deadline to request the free upgrade .

As long as Microsoft does not give more time to update the term.