here is an idea... SLOW THE FACK DOWN!!!.. if it is yuh first rwd learn the car first b4 yuh push it
now on a ligher funner note... why is fishtailing a prob?.. cant controll it?.. to much time driving a civic or waht
nah seriously though yuh could try several option most of which might compromise teh car's handeling a lil bit.. such as softening the shocks..this will lead to the ride day to day of the car being odd.. also the softer shocks will give yous some wierd bounces at high speeds esp in corners.. not good if yuh doh like fish tailing as most ppl who area acustom driving fwd cars panick at this point... lets see.. ahmmm.. tires yeha sticker tires can almost always help a traction issuse.. but... again u sure u wanna run such expensive tires?...
really an truly.. IMO fish tailing it a verry aceptable livable part of ownign a rwd car.. and in fact makes it very fun an IMO i love it .. the corners come in sweeter and the potential to shut down sombod fass with out actually having to run.. but just by gross displays of horsepwr..

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u work it out..meng.. but to my opinion/advice to u is slow down learnn the car properly an then run hard...

.. happy hunting..sorry drifting