so instead of fiddling with this matter on my own continuously, i found a reputable camera shop by me that does on site sensor cleaning for $30....i figured the $30 was worth the professional experience and a guarantee on the work than buying the eclipse kit for $39 and doing it myself with no guarantee and possibly damaging the sensor if i dont know what im doing....the blowing didnt work, even the guy who cleaned it said the piece of dust was "very stubborn"...if i ever have this problem again, i will alwasy try the blower, if not, it is worth it to spend the $30.