forget the problem about the kit lens, its not a problem, mine is quite good, not perfect but still quite good. I'd love to blame the lens but after 25 years of getting it wrong with various slrs I know the problems are me.
After a year, when you know why your pictures are so bad so often, then worry about the kit lens.
I've only just switched to digital and learnt that there's all the other essential bits that will drain your money:
- couple of big memory cards (a busy day out out can be about 250-300 photos, if you are using RAW thats a couple of GB of card, if its essential "must have" shots then you'll probably also want to switch to a second card to prevent the possibility of card fault or corruption losing all shots from the day)
- bag (start smallish, its nice to have a small bag as it limits the amount you carry around)
- spare battery
- big hard drive on the pc, and a big external USB drive for backups, plus a stack of blank cds and dvds for backups (and a dvd writer of course)
- UV filter for the front of the lens (protection)
- lens cleaning cloth (for the UV filter when you get dust or fingerprints on it)
- stupid brush blower thing (doesn't actually achieve much but I always end up with one)
- lens hood (minimises flare and protects end of lens, you can get fancy cannon bayonet ones or cheap universal screw on rubber type which folds back when you put camera away)
- grey card (to set white balance)
after that:
- nifty fifty (50mm f1.8, its reported to be sharp, cheap & also gives low light capability for indoors, mine's on order. Should also teach you to think about composition and position rather than lazy zoom habits)
- tripod + remote shutter (gets rid of the soft pictures and also allows long exposures)
- cokin P holder, 58mm ring, neutral density graduated filters (ND grads - to darken the sky and prevent the sky burning out on landscape shots) and a circular polariser (removes reflections off water & car windows, sharpens up clouds, lightens the wallet and other minor miracles)
- flash with a head that can point behind you for bounce and an extension lead (for when you get fed up of the onboard flash and the startled rabbit look)
- long lens, hood, UV filter & monopod (for when you realise that some things look small when they are far away, and for when you realise you don't like walking far with big heavy camera bags)
- a selection of bigger bags!
then after that lot you will be thinking of a replacement for the kit lens, a wide angle lens, photoshop and a lottery ticket to be able to afford it all