compare 2 books in excel??

How i can compare 2 books in excel.... please help me, I'm using Visual
Studio tools for office 2005....

Check your version of Excel, there is an option in the later versions to Compare Side by Side which is under the \Window\ pull down.
In the older versions, all you can do is opern the two workbooks and scale than onto your screen so you can see both of them.

Cheers