I dont know if this is the right forum to ask questions but i am really in trouble as my outlook is not working. I am using windows 7 OS with outlook 2007 version. From last week it was running slow and used to get stuck inbetween. I dont know what has happen to it now when i click to open my outlook it say outlook.pst unable to open 0X80040600. I have my mails and contacts saved on them. Please help me.