Go into your Template "forumdisplay_thread", search for
Code:
{$thread['profilelink']}
then it's up to you how you add these codes..
Code:
{$threaddate} {$threadtime}
if as you say i can do it, i want format 1 year, 1 mont, yesterday, and today. like the one in screenshoot, apologize in advance because my question is less detail.