After trying the method suggested from Adrian.Chandra i was, at first, able to download almost anything from the market, a little "slow" but i doesn't matter if i can download. But! That was with Android Honeycomb 3.0, because when i upgrade my Eee Pad to 3.1 this method stop working...
I can share some of my personal experience with the "proxy way".
1.- It works just with proxys with port 80 or 8080, or at least no other proxy work for me.
2.- When you star downloading your app, some times it fails and tells you that the netwwork is wrong or something like that, but if you hit retry or try to donwload the app over an over an over, it finally gave up and start donwload.
3.- If your google account is not working, try to open the browser for test if the proxy is really working.
That's all, thanks for the help. If anybody knows another method to avoid the market blocking the downloads please tell me and i test it!
Sorry if my english is not that good...