ALWAYS ALWAYS ALWAYS use a realtor when buying a new home.
The builder's reps are nice and friendly, but they are working against you and not for you.
You really need to take us on the very first visit if at all possible, but sounds like too late in this case. We can sometimes still work it in, we just have to check.
I think the really good builders don't mind if you have a realtor, but I would not trust one that says you don't, unless they recommended you see an attorney.
Normally there is no charge to you as a buyer to have buyer representation.
There are tons and tons of things that can go wrong when buying a new home.
Check out http://tiny.cc/NewHome
for just a few of the issues that can and do go wrong.
We can't guarantee that we can solve every one, but we often see builders railroad customers through issues we know just aren't right, like the right to have a professional inspection done.
When you are ready to buy....give us a call.
The link below will show you some of the homes that might work for you.