I don't know why I just thought about this, but if you want to download an Office Suite that is very similar to Microsoft Office but....one difference....it's free, you should check out OpenOffice.org .
The download is huge, but it's a nice piece of software. I've even used it in court before.
The Spreadsheet and Power Point clone are great.
It can be found at...uh...openoffice.org.
A PC Magazine review of it can be found here.