How to change Microsoft Office 2007 from Spanish to English?

I bought a computer that has Office 2007 installed but it is in Spanish. It doesn't have the Microsoft Tools Tab so i can't do it that way. I found my way into the language part "idioma" inside Word and changed it to Ingles but it never changed over. Anybody know how to make this work??How to change Microsoft Office 2007 from Spanish to English?
From what you are telling me, it seems like you have the Spanish version of Microsoft Office 2007. If that is true, there is no way of changing the software into any other language. It is like if you want to change an English-language computer into any other language. To do that you will need to change the whole operating system by installing the software with the language desired. So, unfortunately, if that is the case, you will need to buy (or borrow) the English version of Microsoft Office 2007, and then install it into your computer. Ask any of your friends. I'm sure somebody has one.