Wordlists and fast scan

As my first commercial title soon will hit the digital shelves I have slowly started designing my next game.
Basically it will word/letter game where the player will make up words with letters.
I know there are a few of those games out there ( ;) ) already but I wonder how people have done with the huge wordlist that must have been implanted. I can't imagined they sat there and wrote word for word by hand but probably used some wordlist out there.

Anyone knows? Anyone could help me out with that?

Also I wonder what would be the best way to check whether the combination of the letters I picked actually are a genuine and existing word?

Putting this topic in general discussion as it is not involving any specific language and I haven't really even decided on which one to use for this game.

http://www.outpost9.com/files/WordLists.html

http://www.picozip.com/prt/index.html

http://www.translatum.gr/dictionaries/download-english.htm

http://www.ibiblio.org/webster/

http://wordlist.sourceforge.net/

http://www.puzzlers.org/dokuwiki/doku.php?id=solving:wordlists:start

I've never done a word game, but I think a hash table would probably work nicely for storage and lookup of words, and implementation is nice and easy. BlitzMax's own TMap ( which I think - someone correct me if I'm wrong - is implemented as a Red Black Tree ) would probably be fine if you didn't want to write anything yourself too.

god thanks!

I hasted away there and actually found some good threads in here as well about creating one.

Some sort of radix search. Like a Patricia trie.

oh never heard of it.. gonna check it out though