Help me Obi-Wan Kenobi...You're my only hope!
LOL
Seriously, though. Have you tried the MSN website? I can't help you with error codes given. My only advice (besides contacting MSN or searching their website) would be to check your firewall(s) and router. There may be a network policy preventing the MSN-IM from talking through the port it wants to. If it can't access the port to get out to the net, it won't ever connect.