Hi There,
Welcome to Adobe Forums.
There is no such known issue that eLearning Suite installation is crashing MS Office or other Microsoft products.
Please try this:
1) If you are connected in a domain then first logon to a local admin account or in the built in administrator account.
2) Disable the third party services and startup items on the computer as per http://support.microsoft.com/kb/929135 and after restarting the computer install eLearning Suite.
3) If eLearning Suite and MS Office or other Microsoft products work fine together then enable the services and startup items and restart the computer. Check again.
Please let me know if that helps.
Also let me know if you have anyother Adobe product installed in the computer.
Thanks
Vikas