Android sdk 1.6 can not connect to internet through proxy?

[empireonline]

I use Android sdk on PC with Win 7, the sdk is 1.6, the proxy server is a http TMG proxy which need authentication, my pc is connected to internet by this proxy. I run android kemulator by followed cmd:
c:\Program Files\Android\android-sdk\tools>emulator.exe -avd and1.6 -partition-s
ize 512 -debug-proxy -http-proxy http://domain/userasswd@172.16.100
.47:8080

there are some error:
tcp:172.16.100.47:5865(2952): header sent, receiving first answer line
tcp:172.16.100.47:5865(2952): received 'HTTP/1.1 502 Proxy Error ( The specified
Secure Sockets Layer (SSL) port is not allowed. Forefront TMG is not configured
to allow SSL requests from this port. Most Web browsers use port 443 for SSL re
quests. )'
tcp:172.16.100.47:5865(2952): connection refused, error=502

Is there some idea to make android connect to internet?

Thanks & Regards!

[empireonline]

Help!!help!