I just wanted to add to make sure there was no confusion on the part of the original poster.
The guide is the salesperson who sells you
DVC points. After I bought from Disney, I have not talked to my guide since, though I get postcards from him to let me know that they're now selling BCV, SSR, etc.
The people you
do talk to a lot after buying is Member Services. And when you call them, they just know that you're a member (by your membership number). I've never had them treat me any differently from one call to another...they've all been very nice and professional when making reservations, cancelling reservations, changing reservations, banking and borrowing points, etc.
We own point purchased directly from Disney and another contract we purchased via resale.
So if you, by any chance, meant will Disney treat you differently because you bought resale, the answer is absolutely not.