I have Installed Eclipse Juno and Updated the ADT as well to 22.0, I have created a custom AVD of Android 2.3 version as is working fine, but it seems there is no internet c
Finally I sorted out my problem.
It was problem due to dns server address.
I did below steps
G:\Andriod Development\android-sdk\tools
G:\Andriod Development\android-sdk\tools>emulator.exe -avd Android_2.3.3 -dns-server 8.8.8.8 -scale 0.75
here Android_2.3.3 is your AVD name, -dns-server 8.8.8.8 will set your DNS address to 8.8.8.8 or 8.8.8.8:55 and -scale will scale your AVD to specified value.
this will start a new emulator. Enjoy :)
Hope may be helpful to others