Customer Service no longer answers rules questions about the 3rd, 3.5, and 4th editions of Dungeons & Dragons. However, you can find the collected rules updates and errata provided by the developers at the following link:
If you're looking for information on the current edition, check out the D&D website, here. If you have had a problem with a book or product from a previous edition, click here to view our product replacement policy and process.
You can find the Game System License for 4th edition here, and the Open Gaming License and System Reference Document for 3rd/3.5 edition here.
The System Reference Document is a comprehensive toolbox consisting of rules, races, classes, feats, skills, various systems, spells, magic items, and monsters compatible with the d20 System version of Dungeons & Dragons and various other roleplaying games from Wizards of the Coast.
Wizards of the Coast's Customer Service department does not provide legal interpretation for questions related to the Game System License or Open Gaming License. If you require assistance with something beyond what is found on our website, then we recommend you contact a lawyer or other legal professional in your area to help interpret it for you.