If you are waiting for a good opportunity to upgrade to Windows 7, now would be a good time to do so. Support for Windows Vista RTM and Windows XP SP2 (Service Pack 2) will be ending soon.
Support for Windows Vista (without any service pack installed) will be ending on April 13, 2010, meaning users must be running Vista SP1 or SP2 to receive any further product support. Users can upgrade to the latest service pack, SP2, for free, providing them with the latest security updates.
Support for Windows XP SP2 will be ending on July 13, 2010. Users still running Windows XP SP2 will no longer receive updates after this date, and are urged to update to Windows XP SP3, a free upgrade, or switch to Windows 7.
Users running Windows XP SP2 64-bit will still receive product support up until April 8, 2014, since Microsoft never released a 64-bit service pack 3.
Users that need help with any upgrade can visit Microsoft’s end-of-support webpage. The webpage provides useful tips for consumers including how to tell what version you are running, and helpful information about Windows 7, for users that haven’t made the switch yet.