There is a way to change the default view by editing the code. If you go into forum.asp, around lines 73-87, you'll find the following block:
Select Case strtopicsortfld
Case "topic"
strSortCol = "T_SUBJECT" & strSortOrd
Case "author"
strSortCol = "M_NAME" & strSortOrd
Case "replies"
strSortCol = "T_REPLIES" & strSortOrd
Case "views"
strSortCol = "T_VIEW_COUNT" & strSortOrd
Case "lastpost"
strSortCol = "T_LAST_POST" & strSortOrd
Case Else
strtopicsortfld = "lastpost"
strSortCol = "T_LAST_POST" & strSortOrd
End Select
Change this to:
Select Case strtopicsortfld
Case "topic"
strSortCol = "T_SUBJECT" & strSortOrd
Case "author"
strSortCol = "M_NAME" & strSortOrd
Case "replies"
strSortCol = "T_REPLIES" & strSortOrd
Case "views"
strSortCol = "T_VIEW_COUNT" & strSortOrd
Case "lastpost"
strSortCol = "T_LAST_POST" & strSortOrd
Case Else
strtopicsortfld = "views"
strSortCol = "T_VIEW_COUNT" & strSortOrd
End Select
This should change how topics are sorted. You can still order them manually by using HuwR's recommendation.