I am a mathematics major and economics minor who plans to purchase his first mac in a few days. I discovered today while reading that Office 2008 does not have the the Data Analysis package/add ins. I really need this so I'm trying to weigh my options. Excel 04 I believe is the only spreadsheet software out for Mac at the moment with that functionality. I really hope I'm wrong on that. I was thinking that I should try to obtain a copy of Office 04. Then I was thinking would I really be missing out on Word and Powerpoint 08 by doing this? And then a combination of Excel 04 and Word and Powerpoint 08 would require me to have Office 04 and Office 08 which would get expensive. Then I was thinking Excel 04 and iWork 08. I hear Keynote makes great presentations but they aren't the most compatible with Windows and I'm not familar with Pages at all. I'm not sure how I should go about this. Any advice?