Hi guys i have finisch all my gauges

now i need to made some glass reflect on my gauges !
to made it more cool !


but i have a litle trouble ?

my question is what programme i need for making my 256  8 bit bmp file whit alpha ?

have try dxtbmp programme for making my alpha but its not working on a 8 bit 256 color texture

have try bmp 2000 and image tool programme but none was able to make a 256 8 bit image whit  alpha  ???

i know that photoshop and corel draw can do a 256  8 bit image whit alpha but i have none of  this programme.

is there some  litle free programme i can find some where on the web to made or convert an image in
256/8 bit format whit alpha ?  pls help !