how to make sql not in fid

[bekti]

i would like you to help,,

this code

PHP Code:

$query = $db->query(" SELECT * FROM ".TABLE_PREFIX."threads ORDER BY `tid` DESC LIMIT 10");

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this will make last or new post from all forum,,how to make an exception?
so all thread or post from forum id (FID) 2 and 3 will not show in new post

is that like this?

PHP Code:

$query = $db->query(" SELECT * FROM ".TABLE_PREFIX."threads NOT IN FID != (2,3) ORDER BY `tid` DESC LIMIT 10");

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please help