You don't need to pay for branding if you want to use it within your company.
To change logo just replace the file:
logo-small.gif
which is located in data/Base_Theme/templates/default/images
Make sure that the file will be exactly 193 x 68 pixels
Make backup of this file (your logo) as it can be overwritten during program updates.
However if you want to resell epesi you should:
[list:2ajxsmsy]
[*:2ajxsmsy]register as a partner[/*:m:2ajxsmsy]
[*:2ajxsmsy]you still are obligated to provide MIT license terms, which states that Telaxus LLC is a legal copyright owner[/*:m:2ajxsmsy]
[*:2ajxsmsy]we also require that somewhere (setup and login page at minimum) there will be small logo "epesi powered" with a link to epesiBIM.com web site[/*:m:2ajxsmsy][/list:u:2ajxsmsy]
To register as a partner just send me PM (signup form will be available shortly).