Phone as modem not working

[jejb]

Sprint just replaced my TP with a TP2. It has the latest 2.04.651.4 ROM and Windows Mobile 6.5. I'm trying to get the tethering/phone as modem working. But I'm getting "67 Registration" errors anytime I actually try to connect. I've searched the forums and tried evertything I could find on this, like the steps outlined below. But everytime I soft boot the phone, the ForceCellConnection goes back to "phone as modem". Apparently, this stuff is getting forced there in the boot up routines? Is there some way around this?

I really need to get this working, so am open to ANY suggestions, like different ROM's, etc. Does anyone have this working with the latest Sprint ROM?

Thanks in advance for any help.

- Enable USB Teathering -
1. Go to: [HKLM\Services\CMGuardian]
2. Create a new DWORD Value called "Flags" and set the value data to "4"
(if it is already there then skip)
3. Softreset
4. Go to: [HKEY_LOCAL_MACHINE\Comm\InternetSharing]
5: Delete the "isext.dll" entry
6. Go to: [HKEY_LOCAL_MACHINE\Comm\InternetSharing\settings]
7. Change "ForceCellConnection" from "PhoneAsModem" to "Sprint"
8. Softreset

Install ICS and WModem Fix.cab