Ok I have Office 2003 and have used it for a while and have 2007 also and just installed it. I selected for Outlook 03 to be removed since it said only one version can be installed. Well when it was done installing 2003 was completely gone for some reason and knowing there have been compatibility issues I wanted Word and Excel at least from 03 to be there if I needed them.
At this point I re-installed Word and Excel 03 all seemed fine till I tried to open Word 07 and it began the Office install process...seemed odd to me since it was already installed so I canceled it and Word 07 popped open. After repeating this process it did the same thing. I figured the install got botched so I uninstalled 07. When trying to open Word 03 it started the Office install process again...and yes it was already installed.
At this point I am back to 2003 only for now until someone can maybe shed some light on this issue. It seems these two don't like being installed together but I have read other post of people having no issues with this. Any ideas are welcome.