So at the end of my interview, one of the interviewers snuck the question in on me as we were walking out, so it caught me off guard when he asked "What I was looking for as far as salary goes?" Wasn't expecting it, and I didn't want to say anything specific and I gave a $5K range. Moving along to the following week, they extend me an offer and it's the bottom number of the range I provided. I really wasn't sure if I should or not, but I went ahead and sent off a letter to negotiate aiming for about the middle point of the $5K range I gave. Last I spoke with them, they said they'd try and see what they could do, and that they'd get back with me, it's been two days and I could just be over reacting, but there seemed like a lot of communication and follow up early on --- ie. I was contacted to let me know they'd be extending an offer, again to tell me that it's going through approval and should be in my inbox that day and once again the day I sent the negotiation reply ---- but it's been silent since --- wondering if I should just sit tight or send off another follow up e-mail? I feel like I may have put them off after giving a range, them meeting it and then asking to go higher in that range? In the past I've always accepted the first offer --- so this is a bit new for me.
Update: I guess I panicked too soon. I heard back and I got what I asked for

--- I'm finally a Systems Administrator btw. So long end-user support!