I think you could even do a platform battle system in Rm2k3 using a CMS and the Pic Pointer Patch, its a good amount of work but is doable and you dont need to deal with Ruby or real code if your not comfortable at it.
Also If youv never made a game before, or have any RM experience, download rm2k3 and play with it and it should teach you the foundation of coding and programming rpgs. The first game you make wont be your greatest, but after you get good at that, you can work on the game youv always wanted to and should have the experience to really pull it off!
The nice thing about Rm2k/3 is you don't need to be a programmer to use it, but you will slowly become one as you get used to it and eventually move on to complex scripting with XP or VX as you start to realize the limits of rm2k/3.
Also I would buy VX....You'll need it eventually