EDIT: I did it! I used "gstoolkit".

Hello, I'm translating Golden Sun for GBA, but I'm new to this, and I'm having problems with the compression.
I found a topic (http://www.romhacking.net/forum/index.php/topic,2242.0.html) and a work-around (http://www.romhacking.net/docs/golden_sun_text.txt), but I don't know how to use it. How can I do it?

Thank you very much.