I've been hitting my head against the issue for quite some time now. tonight I'll be taking a fresh approach with it. My biggest trouble has been getting ns_adp_parse to parse through the adp pages consistently. (sometimes my vars aren't being parsed at all).
Also, I know that Michael Cleverly is working on this for Postgres and AOLserver 3.0. He has it working on a site right now using 2.3 and a Solid db.