The setupxsi3.5mswin32.exe file you have requested: Utilities / Modeling / SOFTIMAGE|XSI EXP for Half-Life 2 - 161.87mb is not available. Perhaps try browsing all files for the game Half-Life 2 and upload any files you want to share or are missing. This is the only information we could locate:
From the installer:
Tired of half-baked, stripped down "mod" tools? Bored with limiting plug-ins for hobbled personal learing software?Well then, it's time to use the tools that the pros use. Take advantage of the world's fastest subdivision surfaces, industry-leading rigging and character animation in this full, professional version of SOFTIMAGE|XSI.The tool used to build the original Half-Life 2.
Well then ladies and gentlemen, the modeller for the HL2 engine has been released. I don't think anything more is required for this one. Have fun . . .