I can't offer any advice until I know what someone is looking for. Buying a DSLR means spending more money and carrying around larger, heavier equipment. What do you hope to get from that? What equipment do you currently use?
If you like your basic compact camera that has a 28-80 equivalent zoom, or something like that, but you want more resolution or better low-light images, then the kit lens will start you off just fine. If you have a megazoom camera, be aware that there's no such thing available for a Pentax camera: while you can get longer lenses, shorter lenses, faster lenses, and lenses that draw the light better, you won't be able to find a wide to super-tele simply because of how big that would be. Do you want macro abilities? Do you use flash a lot?
There are many things to know before good advice can be given.