Outlook Problem Please Help

Adroid

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I run a 64 bit Vista and have had 0 problems with this computer I built 2 years ago. I use my outlook for work.

Now out of the blue I get an error that says "Cannot open outlook window" - what the heck?

I tried putting the CD and using repair function which didn't work, I really don't want to reinstall. It looks like I will have to completely uninstall the entire office suite, then reinstall. Which also means I will have to download several gigabytes of updates, and I'm running out of hard drive space. Any ideas?