I'm making a tool/program in RMXP and my character appears to be acting weird as soon as I start up the game/test run. Instead of waiting for a command, the character runs to the right until they hit a wall/object, and I can't apparently go left or right, only up or down.

Delete System32 ... Kidding but anyway,
You're making a program in RMXP?
I don't understand your question fully enough.

What events do you have on your map?
Have you modified any of the default scripts?

Yeah, list the details of the program your making so we can see what's wrong.

I agree with the people above me... elaborate, please?

And you're trying to make a program? Like Wora's window generator?