Pictures on Screen with RGSS

[Color]

I'm very new to scripting, and I have a few simple questions. First, how would I take an image file that I put in the game's folder (let's say 'sample.bmp') and show it on the screen? Then, how would I erase the picture? Also, can I set the image to have a transparent color?

And a side note - is there a "pause for x frames" function that you can use in RGSS? (Like the wait command in XP?)

Thank you!

[tSwitch]

why do you need scripts to show a picture?