SSI is a neat little trick that lets you update your links without having to go through each page and adding them by hand. It's not hard and is probably as easy as wiping your ass. It saves a lot of time and is really easy. Just insert this code: 

<*!--#include virtual="nav.html" --*> 

Remember to REMOVE the *'s or it wont work!

Make a page and put your navigation stuff etc. on it. Then save it and insert the above code where you want it. Rename "nav.html" to whatever you saved your navigation file as. Make sure your server supports SSI first, or it won't work. After you've added the code, rename your pages to .shtml or the SSI might not work.