In Word 2000, it works like this (in case it helps): with Word open, go to Tools, and then Options. In the Options window, click on the View tab; you should see a section on Formatting marks, just check whichever ones you like (or All), and click OK to exit.
I just reread your question and now I'm not sure if you're asking to be able to just view them or to actually print them. If you want to print, go to the same Options window, but select the Print tab. I'm not sure which one it would be, but I would try, in this order, Hidden text, and then Draft output, and finally, if the others didn't work, Field codes. If none of those work, try some of the others, I'm sure one of them will do the trick.