Every time I reboot, all my MS Office 2007 apps cut out!

The message I get is "MS Office has not been installed for current user".
Each time I must uninstall and re-install, and I'm fine, as long as I leave my computer running 24/7. With my MS Office, particularly there is an additional problem: every time I do this my email history is cleaned out, so if I am stuck with unanswered emails, they are lost!

two questions:
1. How can I preserve my email between re-installs?
2. How can I get this software permanently installed?

thanks so much,
Laura

What is happening is the conventional, OFFICIAL uninstall does NOT really do this--Uninstall, because it leaves stuff in your Windows Registry

What you have to do is use something like use the FREE Revo Uninstaller and then when asked do you want a COMPLETE Uninstall, you do, and then click to uninstall ALL (ADVANCE) the registries so M$ no longer sees any sign a program is or WAS on your machine--Revo's Wizard will walk through the process

Now reinstall what you want, and you will have a virgin install