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We analyze the properties of VIRGO detector with the aim of studying itsability to search for coalescing black hole binaries. We focus on the remnantsof the Population III stars, which currently should be massive black holes($\sim 100-1000 M_\odot$), some of them bound in binary systems. Thecoalescence of such binaries due to emission of gravitational waves may becurrently observable. We use a binary population synthesis to model theevolution of Population III binaries. We calculate the signal to noise ratiosof gravitational waves emitted by the system in each of the coalescence phase:inspiral, merger and ringdown, and provide simple formulae for the signal tonoise ratio as a function of masses of the binaries. We estimate the detectionrates for the VIRGO interferometer and also compare them with the estimates forthe current LIGO. We show that these expected rates are similar to, or largerthan the expected rates from coalescences of Population I and II compact objectbinaries.Comment: sumbitted to A&

VIRGO sensitivity to binary coalescences and the Population III black hole binaries