"The processs android.process.acore has stopped unexpectedly. Please try again"

[drsel]

I bought a brand new HTC Dream (T-Mobile G1) from naaptol.com & put a Tata Docomo SIM.
Cell network is OK for phone calls, but INTERNET is not working.

Tata Docomo Gallery put APN settings, but still I get error "The processs android.process.acore has stopped unexpectedly. Please try again"
The same error keeps coming.

I then put the following APN settings

Name: TATA DOCOMO INTERNET (You can name it whatever you'd like, though.)
APN: TATA.DOCOMO.INTERNET (all in uppercase letter. No camelcase or lower case letters should be in there)
Proxy: 0
Port : 0
Username: Leave it blank(if there's any pre-existenting value, clear it all off)
Password: Leave it blank(if there's any pre-existenting value, clear it all off)
Server: Leave it blank
MMSC: Leave it blank
MMS Proxy: Leave it blank
MMS Port: Leave it blank
MCC: 405 MNC: 03
Authenticantion Type: Leave it blank
APN Type: Leave it blank




I then restarted the phone, but still I get error "The processs android.process.acore has stopped unexpectedly. Please try again" The same error keeps coming.
Please help.
Thanks in anticipation!
drsel