Repair PST

You are on the right way Jenifer. The thing that you need to care about is to do the complete backup of your outlook express since it carries your asset and no one want to loose their official files. Things that you need to do are,

You need to first make all the system files and file extension visible. To do so

Now backup all outlook express data. It means you need to take the backup of Messages, Address Book, Mail accounts and News Accounts. To Do these things you can follow http://support.microsoft.com/kb/270670/EN-US

After you take the backup, you are now able to perform the outlook uninstall process. You can do this using the control panel > Add or Remove Programs. Then click on the windows setup tab. Under components, scroll down until you see the outlook express listed. Click on Apply and then OK.

If you are interested in formatting your primary drive, do it and then re-install the operating system. In case of Formatting, you don\'t need to do the outlook un-installation because everything present on the primary drive will be automatically deleted. After your computer is successfully formatted, Install the fresh copy of outlook from the outlook CD or from the Microsoft Office CD.

Then use the backup files and restore all the files to your outlook. To know the complete process you can follow the same page http://support.microsoft.com/kb/270670/EN-US

I think you will do these things very easily if you follow these simple steps. If any problem occur then you can use the outlook PST Repair software that can recover all your data from formatted drives, corrupted backups and deleted files.