BB Software :: No Internet Service From T-mobile (BIS)?

my dougther has a blackberry bold 9700 bought on the black market in the netherlands not the illegal market but the one in Beverwijk. the problem is that t-mobile can not get the mobile fone on there network it gives an error en the told me that this phone is only good for bes. my doughter has sold her previous blackberry curve 8520 t-mobile prepaid to get the 9700. is this trou that there are blackberry 9700 versions that only work whit bes!!!! i want the phone working whit her prepaid zo she dont get large phone bils. is there somme one who can help us. and is it trou that when the phone is registered to a previous person she is not be able to get her phone on the network, is there some place where you can check this.the message i cet when i wand to greate a account is.The error is Cannot create account: This BlackBerry(R) device is not registered with your wireless service provider.register this device and verify that the URL of the current web site matches the one provided by your wireless service provider.To register:1. In the Application list in your device, click Options2. Click Advanced options > Host Routing Table3. Click the menu and click register now T-mobile gould not do anything about is zo please Help herus ore give me a gleu what i kan do about it.