php mod rewrite and handling variables

I have URL's currently structured as:

domain.com/index.php?ref=home&id=10002

I want them to look like:

domain.com/home/10002/ or domain.com/10002/home/

(most likely the second one). I know this can be achieved with .htaccess and php, but I can't find any good doc's on the subject of using php and mod_rewrite to do what I want in the end run. So does anyone know a good way to do this? or does anyone know a good doc/tutorial on the subject?

I know I want to filter the 10002 and home part of the URL through my index.php file still, but I just am unsure how to get the .htaccess file structured so I can catch those variables within the URL and then use them with the index.php as I do currently without the URL structure being the way I want it.

not tested, but you need to match an integer followed by slash followed by a string followed by a slash, and in that case pass the back-references to index.php:

RewriteRule ^([0-9]*)/(.*)/ index.php?ref=$2&id=$1 [L]