The shkpatch.exe file you have requested: Official Patches / System Shock 2 Patch - 5.23mb is not available. Perhaps try browsing all files for the game System Shock 2 and upload any files you want to share or are missing. This is the only information we could locate:
The patch implements cooperative, modem/LAN capability for up to four simultaneous System Shock 2 players. The patch also improves the game's single-player mode by adding user control over weapon degradation and monster re-spawning.