Insatlled Spanish version INSTEAD of ENGLISH version of Office 2013

I have Windows 7 sp 1. I recently purchased my new MSOFFICE 2013 and tried to install it. I accidently indicated to install the Spanich Version without my realizing I had done so. Upon completion I found the wrong language version was installed. I want the English version. How can I correct this error. I tried to uninstall the MSOFFICE, and then reinstall, but the program now only gives me the Spanish version for installation.....
Thanks
Dieter