I used the spreadsheet thing in OpenOffice in Windows XP. I have tried OO for Mac. But it uses something called X11.. I feel that OO runs rather slow in OS X. I guess it is because it runs via this X11 thing, yes? Then there is Office 2004 from Microsoft, but I don't know... What Office thing do you guys use? Any recommendations? EDIT: Just found out.. NeoOffice sounds nice. No X11 dependencies..