The current version of the DSL-50X Utility is v1.2.0 which was released on 30 May 2004.
Current version: Upgrades
DSL-50X_v120.exe (1Mb). Pick this one if you have installed a previous or you know that you already have v2.0 of Microsoft Installer (MSI) installed. The file is much smaller because it does not include the MSI engine executables.
Current version: New Installs
Win9X_DSL-50X_v120.exe (2.6Mb). A new install on Windows 95/98/ME. The file includes the Microsoft Installer (MSI) v2.0 engine executables for those operating systems.
NT_DSL-50X_v120.exe (2.7Mb). A new install on Windows NT/2000/XP/2003. The file includes the Microsoft Installer (MSI) v2.0 engine executables for those operating systems.
NT-Win9X_DSL-50X_v120.exe (4.3Mb). A new install on any Windows 32 bit operating system. The file includes the Microsoft Installer (MSI) engine executables for all 32 bit Windows operating systems.