Just select the text you want to be counted and open the Info Palette.
There you can see how many characters, words, lines and paragraphs the selected text has.
The only problem is that if your text is in unlinked text frames, you'll have to count the words separately in each frame.
Home: iMac G5 17'', 1.8 Ghz, 768 MB Ram, Superdrive, OSX 10.4.6
Work: Power Mac G5 Dual 2 GHz, 1,5 GB Ram, OSX 10.4.6
Power Mac G4 733 MHz, 1GB Ram, OSX 10.3.9
iPod 5G 30GB White
Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbour. Catch the trade winds in your sails. Explore. Dream. Discover.