Transparency problems with RMXP

My objects from the tileset arent transparent. Even the ones that came with RMXP.
Most of the charsets arent transparent either. Other than going and editing every single image can anyone help me?

you have to go into "Materials" press F10 to do so. then lets say a you got a tileset you want to be transparent , go to the "Grafics/Tileset" section and click import. Next using the mouse left click on the main color outside of the tileset (aaround the tiles( and then rightclick the same spot:


the color's at the bottom should be the same color as what you don't want (what you clicked)

if that dosen't work, heck if that isnt what you needed, feel free to reply "NO" I wont mind trying again.

Thanks ill appreciate any help at all. but i cant do that now cuz im in school

ya, no worrries I leave for school in 20 mins  so once you get back home try it out and reply with your results. It might take me a while to reply because I will be a school when you gt home.