Apps Error when open google app engine launcher

[plusnplus]

Hi..,

When try setup tinywebDB from :http://appinventor.googlelabs.com/learn/reference/other/tinywebdb.html

I got error when open google app engine launcher:

 File "GoogleAppEngineLauncher.py", line 42, in <module>
   File "wx\_core.pyc", line 7913, in __init__
   File "wx\_core.pyc", line 7487, in _BootstrapApp
   File "launcher\app.pyc", line 58, in OnInit
   File "launcher\app.pyc", line 152, in _VersionCheck
   File "urllib.pyc", line 82, in urlopen
   File "urllib.pyc", line 190, in open
   File "urllib.pyc", line 338, in open_http
   File "urllib.pyc", line 351, in http_error
   File "urllib.pyc", line 702, in http_error_407
   File "urllib.pyc", line 714, in retry_proxy_http_basic_auth
   File "urllib.pyc", line 773, in get_user_passwd
   File "urllib.pyc", line 782, in prompt_user_passwd
 EOFError: EOF when reading a line

my understanding from the error code in log file (in my first post) is because my office network have proxy server, that need user id and password to access internet.
I wonder, if that cause the error, how/ where i should key-in my proxy user name and password?

thanks for any info/ help