I recently completed a reinstall of Windows 7 on my Dell laptop and have been having to reconfigure everything for a couple days to get back up and running the same way I was before the reinstall. One thing I decided to actually upgrade in the process was Microsoft Office from MS Office 2007 to MS Office 2010. So far it appears that Office 2010 is much less bulky than 2007 so I am really happy with the upgrade choice even though typically during a reinstall I try not to upgrade many things so if there are any problems it is easier to isolate the issues. One thing that changed in Office 2010 was the nickname cache or the use of NK2 files so you have to actually import your NK2 file into Outlook 2010 for nicknames to start working. Follow the directions below to import your NK2 file into Outlook 2010.