i believe you'd end up with 2 forums with many of the same questions.

when people show up for the first time, if they see 'support' or 'newbie' ... they are going to be confused... because they're definitely a newbie, but they need support.

having it all in one area does have the slight chance of a newbie actually reading a post that might be right there next to their own post... (instead of the stickies... which are invisible sometimes)