Posts in alphabetical order?

[Rundown2]

I have a little problem. I just install my vbulletin and import xmb forum to vbullentin. Now the post is in alphabetical order. When my member try to post. it goes into alphabetical order.
don't know what going on. can some please help me?:(

[Lynne]

Admin CP > Forums & Moderators > Forum Manager > select the forum to Edit > Default Sort Field > something other than Thread Title