Market Regulation Services - Trading Halt - Vista Gold Corp - VGZ

May 10, 2007


    TORONTO, May 10 /CNW/ - The following issues have been halted by Market
Regulation Services (RS):

    Issuer Name: Vista Gold Corp
    TSX Ticker Symbol: VGZ
    Time of Halt: 13:47 EST
    Reason for Halt:  Pending News



For further information:

For further information: Market Regulation Services Inc., (416)
646-7299