  We present the first results from a 40 ks Guaranteed Time XMM-Newton pointing
in the Pleiades. We detect almost all early-mid dM members in the field and
several very low mass (VLM) stars - including the brown dwarf (BD) candidate
Roque 9 - and investigate the variation of X-ray activity levels, hardness
ratios and flare frequency with spectral type down to the BD regime.
