i did that but the transparent is set to 50 how can i set it to 0 so the alpha is completely gone on the game screen

Strange... might you consider uploading this image somewhere so I can take a look at it?

tga download

here is the file i hope i did this right

Well it definitely is in the right file format. Yet it does not provide an alpha-channel. Thats why it isn't transparent. Which program do you use for editing your images? If it is GIMP here is the way to do it:
Option 1: New image

1. Start The GIMP
2. Press File->New
3. In the dialog where you can choos the dimensions click on advanced settings
4. For filling choose transparent
5. Draw you image

Option 2: Adding alpha to an existing image

1. Start The GIMP
2. Load your picture
3. In the layers window right-click "Background" and choose "Add alpha channel"
4. Either use the eraser to delete unwanted areas or use the magic wand, path tool or color selection tool to select the undesired area and remove it with a hit onto the delete key on your keyboard.

greetings K-Duke

finally thank you all