Sadly it means that you need to call Microsoft or ask the person that installed this Windows 7 how that version differed.
That is, unless that was not the error message we are looking for.
After Installing Office 2000 Pro On My Lab Top With Windows 7 I Try To Open Word And Get A Error Saying No Registration Information Found The Word Shuts Down. I Installed It On My Other Lab Top With Windows 7 And It Works Fine I Deleted All Office 2010 Products. Can You Help I Have Uninstalled And Installed 3 Times Help. It Is A Hp Lab Top With A Intel Processor
Although it may work fine on one system, because it's not supported, you may have issues using it on all systems. MS Word seems to work OK when other portions of Office will fail, but in this case, it may be a problem with support.
The earliest fully-supported version of Office on Windows 7 is Office 2003 SP3..
Hope this helps.