I accepted a task from Colonel Hsu and this concerns Vault 5. Only thing when i check my active quests its not in there. The quest or assignment is in the miscellaneous section or something and i can't see the location of it, the sqaure icon does not lit up. Does anybody knows the map location of Vault 5? Much abliged.

Vault 5? Hsu only tells you to go to http://images4.wikia.nocookie.net/__cb20120627233305/fallout/images/f/f4/Vault_3_loc.jpg. There's no Vault 5 in New Vegas.