The rmap_v400.exe file you have requested: Tools and Utilities / Misc / RandMap v4.00 - 898.5kb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:
RandMap is a program that creates random maps for the Half-Life. At the moment is supports Half-Life single player and the SvenCoop modification, which is a modification whereby players can play Half-Life cooperatively.