i need to add style and install it to the forum i use ver 1.2.21.48 rc1
and thanks for help

Which style?

Download a style from styles link of icy forum.

decompress it - upload the hole folder to your server

 into   /Templates

than go to ACP - styles and templates

Install new style

set new style to default

and thats it

nothing happend bro i i can't find it at instal style

1. You were asked which style you are trying to install as Icy Phoenix also uses nested styles that are not quite like stand alone additions.

2. I recommend that you upgrade to RC2 as RC1 is now defunct, and support for both RC releases is not something that is going to be too welcome here.

3. Please read all available documentation on how to do things before asking questions about things that have been asked a thousand times before.