Solidworks will not support x32 operating systems after 2013. You will not be able to upgrade to Solidworks 2014 next year unless you upgrade to a x64 operating system. You will still be able to run the 2013 Solidworks edition and earlier on Windows 7 x32 systems.
Also, our current network license is the last to support XP, Vista or 2003. Next year’s network license will no longer support any of these operating systems regardless of Solidworks version.
Please see the 2013 SP04 release notes below for further information: