I download some styles for Yamaha-PSR9000 from the internet, but they have extension
.sty. How can I convert this styles to extension .stl, because the VA-5 just read this extension.
Thanks.

rogerio.....re-Yamaha styles, you need a style converter like EMC or there are plenty of Yamaha Styles that other people have kindly converted for you to download and use.
Go to RAG Group. Clink on the link bellow.
http://www.daytonamusic.com/rag/index.htm

Graham UK