hmm, is it real cold when you are starting it (air temp)? Whe is the last time you changed your fuel filter? Could possibly be the fuel pump, but go with the cheaper stuff first
. Other than that, there are tons of things it could be...i'll leave it to the experts, i just thought i would add my 2 cents.
Mine has been doing the same thing, but I have not been able to change the filter yet, so I can't tell you for sure. But it is worth a try, plus, it is always good maintinance. How many miles are on your car?