What are you using to edit them? There has been an issue with PSP 8. It won't save them correctly. I have to use PSP 7.
Anyway, It's like this:
Select all
Save to alpha channel
save as new channel
save as .tga
you will get a warning that it will only save 1 alpha channel
Make sure that when you save it, it is UNCOMPRESSED, 32 bit, transparency IS being used. Hope this helps.
BTW, I like your Purple Rail skin, I'm using it right now.
[Message Edited]

Transparecy And translucency option must be checked too (in SS)

1. No need to swear.... ok?
2. Use png and import........ it works very well! 

 

thanks guys ill try what u said  bordfryr 
koasati that import thing i tryed but it didnt work out or maybe i dont know how to import! i just clicked on import web packge is that how u do it? if not please tell me how

once agian thanks guys

To import a png file, you first select the image you're replacing/updating. 

Right-click the image, or use the drop down list on the Import button, and select Browse for image....

Find and select the png file, you will see a po-pup asking if you want to replace the existing image with the import. Select yes.

The image is imported and converted to tga.

Be sure your transparency and translucency are both enabled.

thanks agian man

whooo it works i think my next skin is gonna look cool(lier)
hehe

hey no matter what i do tga files will not work when i import an msstyle skin. as far as using png files why would we want to if we wanted to import an msstyle in the first place. I noticed that for some dumb reason ss will not use tga files from msstyle files.

your right ! but anyway png files are as good as TGA but i dont know why they had to walk around the wall when there is a door