Gate count and dynamic power calculation in Xilinx
You can't get an ASIC-equivalent gate count directly on an FPGA.  What you can get are lists of what FPGA primitives are used by the design.  Check the _utilization_synth.rpt and _utilization_placed.rpt reports.  

As for power consumtion estimates, check the _power_routed.rpt report.  This will list the static and dynamic power, as well as temperature range estimates if you have properly specified the heat sink.  

Edit: oops, you're using ISE.  Primitive count will be in the .map, .mrp, and .par files.  For power, you will need to run the power analyzer.  See http://www.xilinx.com/support/documentation/sw_manuals/xilinx11/pp_p_process_xpower_analyzer.htm .