SW-1 version 1.0.4 was developed because there were some installation compatibility problems between SW-1 version 1.0.3 and Windows Vista.  If you are not using Windows Vista, there is no need to upgrade from version 1.0.3 to version 1.0.4.

If you have purchased a new computer with Windows Vista and have never installed SW-1 you will need to download SW-1, version 1.0.4 to install on your new PC.

If you have a PC with Windows Vista and want to transfer your license from a PC running Windows XP, you should follow the SW-1 license transfer procedure to transfer the license from your Windows XP PC to your Windows Vista PC. As part of the process you will need to download version 1.0.4 and install it on you Windows Vista computer first.

NOTE: When installing on a PC with Windows Vista you will need to be logged on as the administrator of the PC or as a user with administrative privileges to successfully install SW-1.

As always it is advisable to make sure you have a current backup of your PC and that you close any antivirus or spyware programs before upgrading to SW-1 version 1.0.4.