google office 2007 viewer and you get a link to something

"Roland" wrote:

We received an email from a company we do business with in China, it has the
..xlsx extension I need to open it unfortunately our little company can't
afford the purchase of office 2007 yet. So is there any plug in or anyway
to open this file in 2000? I guess we could afford it if it was made
available to us for $3 a copy too.

Any help would be greatly appreciated.
Roland.