不用二次开发，用SQL标签加上IF判断就行了

附上SQL标签

select top 10 topicid,title,hits,topicmode from ks_asktopic order by topicid desc

标签循环体：

[loop=10]

<li><a href='ask/q.asp?id={$Field(topicid,Num,0,2)}' title='{$Field(title,Text,0,...,0,)}' target="_blank">{$Field(title,Text,54,,0,)} </a>{$IF({$Field(topicmode,Num,0,2)}=1||<font color="green">[已解决]</font>||<font color="red">[待解决]</font>)}</li>

[/loop]

楼主把“已解决”和“待解决”换成图片路径就OK了