Hi Nelson,
Please refer the below link for "Xcelsius Installation on Windows 7 with office 2010"
Installing Xcelsius 2008
Links:
http://scn.sap.com/docs/DOC-25567
Or
Tips for Installing Xcelsius 2008 with Office 2010
Links:
http://www.clariba.com/blog/tips-for-installing-xcelsius-2008-with-office-2010/
Thanks,
Daya