As you should be aware, recent wpµ "release" don't use anymore Smarty.
But, it's a great template engine, and it's usefull for user to have the hability to (use|make) their own templates.
That's why i've installed Smarty template system in one of these recent nightly, getting it to works perfectly. The only problem is with CSS. Yes, i nfact, the CSS are located in wp-inst/wp-content/blogs.dir/INT/templates/ (with INT an integer) :
infos-du-net:/home/blogs-unstable# ls wp-inst/wp-content/blogs.dir/2/templates
total 24K
drwxr-xr-x 2 webusers 4,0K 2005-09-25 17:11 .
drwxr-xr-x 6 webusers 4,0K 2005-09-25 17:31 ..
-rw-r--r-- 1 webusers 2,6K 2005-09-25 17:13 comments.html
-rw-r--r-- 1 webusers 3,6K 2005-09-25 17:10 index.html
-rw-r--r-- 1 webusers 595 2005-09-25 17:13 post.html
-rw-r--r-- 1 webusers 3,5K 2005-09-25 17:17 wp-layout.css
So, problem is that i'm unable to make a RewriteRule to access the CSS. So I ask you to help me ;)
When it'll work, i'llm take time to write some tutorial about using Smarty with WPµ.