Thanks, Nec.

If you've got MS Works (often installed when a new computer is sold), you should be able to open and edit the spreadsheet in Works's own spreadsheet application. It doesn't support tabs, though, so you'd have to open each tab as a separate file.

Ok, for those of us that basically use our computers as expensive game consoles, can you be more specific as to how to use Works for this? I've got the chart, but can't use it. I'd love to be able to do my own since I know how many species there are. Thanks.

You actually don't need a chart, just the "master list" with the 23 types of flowers and foliage (numbered in the correct order!) and some basic math to predict your crosses. E.g. cross foliage type 4 with foliage type 16 and your hybrid will have foliage type (4+16)/2 = 10. If you end up with a fraction, just round up to the next integer, e.g. crossing types 3 and 8: (3+8)/2 = 5.5 - round up to 6. The chart is nice to visualize all the combinations, but all it takes is the list and a bit of simple math to do without it.