woah thanks for the great comments!!!
sorry i havnt replied i seems to be struggling connecting to the net at the moment.may need to reinstall windows :O which means saving all my work to disk DAM!
as for the tutorials heres one for final gather.
Jozvex.com
the scene is using a hdri and final gather and one point light behind the dyson.
i got the look by playing with the mental ray settings for each peice of geometry reflction blur and especially irradiance to stop the thing going too white!
also i made the door have glass so light would come through and slightly light that corner part up. from the hdri.
in photoshop i added a picture of a kitchen into a layer so it looks like theres something beyond the door through the glass.