We present a new automatic code (ARES) for the determination of equivalent widths of absorption lines present in stellar spectra. We also describe its use for the determination of fundamental spectroscopic stellar parameters. The code is written in C++ based on the standard method of determining EWs, and is available for the community. We test the

A search for very low-mass and brown dwarfs using Virtual Observatory Tools for cross-correlation of large area catalogs and databases (DENIS, IPHAS, SDSS, 2MASS) is presented. We have obtained follow-up imaging and spectroscopy for some of the candidates. First results from spectroscopic follow-up of candidates will be reported.

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