The sc_isom_filter.zip file you have requested: Tools and Utilities / Starcraft ISOM Filter - 309.35kb is not available. Perhaps try browsing all files for the game StarCraft and upload any files you want to share or are missing. This is the only information we could locate:
For Starcraft Maps. Operates Uncompressed Starcraft Scenarios (.chk). Filters Maps from diamond terrain to perfect square terrain.