Remote debugging error unable to connect and the remote computer is not responding?

I have been messing with remote debugging so finally out of despair here I am. I am trying to connect to a Win 2003 remote machine where I have remote debugging installed (NO VS installed on this machine.) following this tutorial. So, I have added all the ports to exceptions in the firewall and I am trying to connect from my visual studio 2010 (run as administrator) and windows 7 Ho开发者_运维技巧me Premium local machine using No authentication method by attaching it to a process. (For some reason I cannot use windows authentication and gives me edition not supported error!)

What happens is on the debug monitor it says that User has connected but then it just sits there waiting and finally gives an error Unable to connect to xxx.xxx.xxx.xxx. The remote machine is not responding. I tried to research a lot and also created a user with the same name as on the local machine on the remote machine. Also I used telnet as mentioned in the link and it does not show connected to the remote system message but does not show that it failed either and just sits there. I am guessing it something to do with the port not open correctly.Also after the first connection attempt when I try to connect again the remote debug monitor does not show any connected message and also the error I get is that remote debug monitor is not setup or running on the machine (almost like the debugger stops reponding). I am pretty exhausted trying out all the options can anyone give me more direction here ? Thanks !