liutongbao
Hello.
To replace all icons with your own, there is a code that needs to be placed in: Administration - Forms
Insert your values in "HTML Header" instead of red color:<style type="text/css">
.punbb div.icon {
float: left;
display: block;
border-style: none none none none;
height: 50px;
width: 50px;
}
.punbb td div.tclcon {
margin-left: 50px;
}
Div.icon {
background-image : url(URL of the topic icon without new messages);
background-repeat: no-repeat;
}
TR.inew Div.icon {
background-image : url(URL of the topic icon with new messages);
background-repeat: no-repeat;
}
TR.isticky Div.icon {
background-image : url(URL icons with Sticky Topics);
background-repeat: no-repeat;
}
TR.iclosed Div.icon {
background-image : url(URL icons with closed topics);
background-repeat: no-repeat;
}
</style>50 and 50 - this is height and width of icons in pixels - see properties of your image.
You can upload icons in Administration - Files
Thank you very much. Dear friend. I will try it first.
Then I will come back to report whether it is working or not.
The new codes are as follows: - 
The codes work, but I was in a hurry and did not study your screenshot, so I gave out codes for old design styles. In new design styles (Classic DarkBlue, Classic DarkCyan, Classic DarkGray, Classic DarkGreen, Classic DarkOrange, Classic DarkPurple, Classic DarkRed, Community Blue, Community Green, Overcast) the icons have a different structure, specifying the element above, because of this the code does not work. If something does not work for you or does not work as expected - do not be afraid to ask questions, we will always help.