I'm sure someone on here will figure out the dialer issue soon enough but I needed to change my PRL back to the verizon 0001.prl because I updated to the leaked froyo update while I was on sprints PRL. Problem is, i cant get speeds faster than 100kbps where I'm located on that PRL. So with some searching I found a fairly easy way to change PRL's without dialing ##775#.
This is the tutorial I used from droidforums.
i have no idea what an HTC Droid is but i have a Motorola Droid, and have used various HTC devices on many CDMA networks. to program the PRL manually, as *228 (*22801/*22802, etc) may not always work, you can use CDMA Workshop, QPST or the more difficult QXDM in Windows XP/Vista/7. in Linux it is more difficult to explain, and don't ask me about a Mac...
for the FREE QPST:
1. install HTC modem drivers for your O/Shere (courtesy PPCgeeks)
2. put the phone in DIAG mode, or turn on debug mode in Android Settings (under Applications)
3. navigate to Computer Management in Windows (Right click -> Manage on the My Computer icon, or Computer in Windows 7)
3. under COM ports take note of the port of the HTC device
4. start QPST and set the COM port accordingly
5. CONNECT to the phone
6. SEND the 6 digit MSL/SPC to the phone to unlock it
7. on the Roam/PRL pane upload a new PRL from file. you can get some PRLs for different carriers here
8. either click WRITE or try to exit the program and it should prompt you to save the items edited to flash
now when you dial a number the voice on the other end should be that of your chosen network. but you do need to activate the ESN with the chosen carrier, of course, to get service. you can *try* to *228 now, but it may not work :/
if you are referring to the non-HTC Motorola Droid, then you can use QPST in the same manner. you will need Motorola's drivers, found here (gotta register). put the phone in Debug/Diag/Modem/whatever mode (power it on by plugging in the USB data cable, while holding 'X' on the slide out keyboard). now you will need a Virtual Serial Port configured to IP 192.168.16.2, port 11008. this creates a COM port. there is a way to do it wirelessly as well; search the forum. to get a Hardware Virtual Serial Port, look here for free software on Windows XP. Windows 7 you need to find something else, i never found a free solution, only a trial
i hope it helps!