Folks who are buying...
1.) Most likely, since its new, the phone will be locked to whatever SIM card it came with. Dont worry Nokia's are the easiest phone to unlocked(cept their BB5 phones), give me a PM if you have a locked phone and I'll help you unlock it.
2.) QDs are GSM phones, it will not work with SPRINT(PCI), Verizon(CDMA), NExtel.. They will work if unlocked with Cingular/ATnT, TMobile, and I think US cell is also GSM.
3.) Final FYI its a dual band phone, so majority of the network outside of North America will not be compatible with the phone.