fiuh...

ACES_HIGH ,Locke, tiqhud, thank you very much... it's work... now I'll start repair my fleet icon...
Well...the summary is... I using Adobe Photoshop to make an icon. Ship in the first layer & black screen in the background layer. I use selection tool to mark the ship while making a new alpha channel. And.... save as an uncompressed TGA file. The last thing is that they'r a setting below the "save as" window. I should choose "save as a copy" instead of "layers" to make it work. nah... tada!.... my ship working properly now.
Umm... one other thing is if u make it with Adobe Photoshop, make sure there's no other alpha channel (nor active or inactive). In my cas , it won't work.....
Thanks guys....! ;)