I have a few suggestions (some have probably mentioned before) in increasing order of drasticness to improve newbie control & management and make the forum more friendly to both newbies and senior members.
1.- Put a notice in large, attention-drawing letters on the "Post new topic" screen for the first 'x' posts/days of a new user that encourage reading the FAQs/Wikis and using the search function before posting a question, as well as having a look the TOS; perhaps with some visible links to them. Reason: The importance of reading the FAQ/TOS and using the search function is probably underemphasized and also possibly not visible enough. Probable newbie thoughts: "Terms of Service? Bah, surely some boring stuff in some kind of legal jargon that nobody reads anyway. They probably have it just for legal purposes" "FAQ? They must have only dumb questions like "what is MP3?" and stuff. My question about VBR/joint stereo/etc is surely unfrequent enough." "Wiki? WTFIT? Knowledgebase project? Huh? Scary advanced stuff!"
1.5.- In addition to the encouragement to read FAQ/Wiki/TOS and use Search, threaten the new user with probable harsh responses by the members if the question shows that s/he didn't do his/er homework. Reason: Fear sometimes works.
2.- Make a forced tour through the TOS page and FAQs to complete the registration process. (This might be already implemented, I don't know. I don't remember having seen something like this when I registered two years ago). Reason: Some newbies are lazy and will want to get "straight to the point".
2.5.- Tour makes you manually tick every TOS point to ensure you've read them.
3.- First 'x' posts by a new user automatically go into a "Newbie" forum not visible at the portal until a moderator or a senior member (or group of specially designated senior members) has a look at it and, if deemed appropriate, promotes it to the general forum. Incidentally, a moderator could demote a "well-standing member's" post to the newbie forum if the answer could be easily found on the FAQ or search function.