sorry for getting riled up, but you posted under an assumption that i was a kid with no experience and no respect for music. i would appreciate any help you have. not telling me i will never learn on a budget keyboard.
later
edit:and also, in reply to your post about intrest and seriousness. i'm not really sure what type of music i'm intrested in playing. i guess i'll figure that out after i get the basic stuff knocked out. and seriousness, i've been wanting to learn piano for a couple of years now. and yes, i am serious about learning it. not like a career choice or anything, just for my own personal enjoyment.
Well, what is it that you want to learn? From what I can tell, you know music from other instruments, so I assume you are mostly interested in the piano as an instrument, not as a tool to learn music. If that's indeed the case, the cheapest, decent keyboards start at around $600. That gives you decent action, but it will be lacking in other aspects that are important in piano playing, such as pedalling.
You won't be able to learn the piano (I mean the very basics of it) on a keyboard that does not have weighted keys. The only alternative is a keyboard with so-called "touch response", i.e. something that will put some resistance up to pressing the keys down. However, I do consider this a non-option for someone who is serious about learning piano.
The best is really to check out pianos in a store for yourself. Play on acoustics, just to see how they feel. make sure you play on different brands, because the action on different brand pianos can be different like day and night. Then check out the Yamaha P series electronic pianos (if you are in the US, go to the nearest GuitarCenter). Then compare to lower-level keyboards, which you can find in any decent electronis store. Then make a decision.
Final thought: in my opinion, something like the Yamaha P-60 is the absolute minimum, and I would consider this inadequate for serious people, but it would get you started.
Hope that helps.