Acidtech logo 1.21 php3.01

[nashslash]

Hi there, currently using the acidtech red theme version 1.21 and phpbb 3.01

I have created a new logo of 768 x 88 pixels and wondered how to add this logo centered to the theme, and replace the original..

any help please...

[CyberAlien]

upload it to imageset, then in phpbb control panel change image in admin control panel -> styles -> imagesets