Creating a rule to block it from downloading messages

There are number of questions and problems I have regarding Outlook 2007. Does Outlook 2007 has an option of creating a rule to block it from downloading messages in a given criteria because I would like to block it from downloading email from the server to a certain recipient who shares the same account. All these were achievable with Outlook Express but I don’t know why I can achieve this using Outlook 2007 which I thought would be much superior to Outlook Express. I also don’t understand why when I start the program a dialogue box appears which bears the message “Microsoft Office Enterprise 07 is configuring files and folders” This happens after it has sent and received a number of emails. This makes it appear as if something is being installed and the computer cannot allow other programs to run at that time. The weird thing is that this only happens when Outlook is starting however after running for some time the only thing that happens when I click on the send button it sends the mail. I have done all I could with no success so can someone help me with these problems? I will be really thankful for any solution offered.