First of all: Don't expect too much english- I haven't spoken for 'bout 5 years; french is even more worse, but I hope you'll understand me...

Well my prob:
I am creating a point and click adventure and some graphics have to be semi transperent.
Is that possible and how do I realize it?
If you didn't understand what I was talking 'bout- an example:
In this adventure I am creating there is a magician how "uses" his crystal bowl. This bowl is supposed to be semi- transparent (Is it the correct word? NO? Description: You can see through it what's behind)
The "normal" background of the crystal bowl's picture has to be completly transparent...
Same question again:
Is that possible and how do I realize it?
I hope you can help me soon - if you understood what I was trying to say...
Thx a lot,
Nuna