Hi Veggie,
Both Power-One (their Aurora inverters) and SMA (WindyBoy) makes inverters for wind turbine grid-tie. Both brands are UL1741/cUL approved, so it can be done legally. For the WindyBoy you have to provide your own rectifier, Power-One has a rectifier available (same box also generates a frequency signal that the inverter then uses). Both are MPPT type inverters, the WindyBoy uses a 'table' of 2 or 3 points, depending on the model. Power-One has a true MPPT table of many points, that couples either voltage or frequency (RPM) to output power. Of course, the turbine voltage and power has to fall within the limits of the inverter, so it may or may not work for your wind turbine.
Feel free to contact me directly if you need more info about the Power-One inverters, I work with those (haven't used WindyBoy personally).
-RoB-