It has been a couple of days since you have posted. I am not an expert on Outlook 2002 but I will mention a common problem I have had running Outlook that has caused similar problems for me so I will try to help. The database file used to store messages and folders can become corrupted easily. Events such as a system crash while your machine is writing to the database file can do this. It is very important to maintain current backups of the database file(s). The database file on this version of Outlook also has a maximum size of 2GB. Users have reported problems before the file has reached 2GB. If you have been making backups of the database file you can restore the backup. There is also a method to repair a corrupted database file.How to manage .pst files in Outlook 2007, in Outlook 2003, and in Outlook 2002http://support.microsoft.com/kb/287070Repair an .ost or .pst file in Outlook
There are many good alternatives to Outlook. I personally prefer to run Office 2007 with Outlook as I am so familiar with these products and they have worked very well for me.
If this does not help post again with details on exactly what happened when you were trying to do what. Do include all details on your machine specifics.