Set the following settings in Page Setup for Word 2000: Top Margin 1" Bottom Margin .5" Outside and Inside Margins .5" Gutter 0
Header .39" Footer .25"
Select landscape orientation and 2 pages per sheet. You can then setup your document and print it. If you have a duplexing unit on your printer, you can just send it to that printer. If you don't you would need to print even pages first, refeed the paper into the printer and print odd pages.
I also found a template called BookletSample.dot for Word 2000 that has Macros built into it for creating booklets.