tutorials
Alpha channels in Paint Shop Pro 7
Step 1
Make the texture and the alpha channel as 2 seperate images and save them.
Step 2
On the texture image click Masks > New > From Image...
Step 3
Select the alpha channel image in "source window" and click ok.
Step 4
Click Masks > Save to Alpha Channel.
Step 5
Save the image as a .tga file. Before saving the file look at the options (button on the right of the save dialog) and make sure it's set to 24 bits uncompressed, otherwise you won't be able to save the alpha channel within the file.