There is already useful stuff http://wiki.dwscoalition.org/wiki/index.php/Dreamhack_Getting_Started (worth mentioning for possible interlinking or this could go there if it's mostly links/short stuff).

Also:
-- Change your account type (payments priv) and link to http://wiki.dwscoalition.org/wiki/index.php/Privs
-- enabling shop: http://wiki.dwscoalition.org/wiki/index.php/Shop_setup
-- enabling captchas: http://wiki.dwscoalition.org/wiki/index.php/How_to_enable_CAPTCHAs_on_your_Dreamhack
-- other alternative to removing creation codes (for less spam): http://wiki.dwscoalition.org/wiki/index.php/Allow_users_to_register; also mentioned in http://wiki.dwscoalition.org/wiki/index.php/Beginning_dev_checklist; which is redundant but that's another story...

Hmm. Found http://wiki.dwscoalition.org/wiki/index.php/Production_Setup. Might be worth recycling/renaming.

Edit whatever:
http://wiki.dwscoalition.org/wiki/index.php/Dreamhack_invite_codes ?
http://wiki.dwscoalition.org/wiki/index.php/Cheat_Sheet ?