All depends on the software. In PSP you can save the png and (being sure to save as True Colour, not 256 colour) choose "Transparency : use current transparency". No need to setup an alpha channel - WYSIWYG!
PNG alpha channel help
Blitz3D Forums/Blitz3D Programming/PNG alpha channel helpThe forum is locked. These are the original blitzbasic.com forums, kept so they can still be read. No new topics, replies or edits can be made here. To join in, head over to the Blitz3D+ forums.