Transparent Borders?

Hi all, how can I give a picture transparent borders?

Alpha the borders with an art program.

And how would I do that?

What program are you using?

Photoshop, but I think a friend can explain it.

Still not solved, sry for bumping but I thought that If anyone read this while the previous post said "problem solved" they would leave it if I just edited

Does .tga support transparent border?
else does .png work in wc3?

EDIT:
Ok nothing Ive tried works, can anyone tell me exactly how I give this pic transparent borders that works for wc3?
EDIT: Cant seem to upload the file -_- its invalid..

Use the edit button. You don't need to bump a thread after 5 minutes. I am omnipresent.

.TGA supports alpha channels. Alpha channels are transparency.
.PNG does not work in Wc3. .TGA or .BLP.

Well can someone explain in details on how to give an picture transparent borders so it doesnt give that big black box when using "Image" in wc3?

(I used png in wc3 and it worked, though didnt give me the transparent border I wanted)

Photoshop = use the erase tool.

Erase tool? :S

If you mean like this it wont work.

It just gives me an white box.

EDIT:Problem solved, I experimented with the alpha channels and succeeded, ty for your cooperation