I try to connect to the Application Server (IP Address), System Number (00) and System ID (APC) but get the following error:
Sapgui 710 [Build 9003] Tue Sep 08 06:24:47 2009
: 'partner '10.0.103.217:sapdp00' not reached
Time Tue Sep 08 06:24:45 2009
Component NI (network interface)
Method NiPConnect2: 10.0.103.217:3200
Return Code -10
System Call connect
Error No 10061
Error Text WSAECONNREFUSED: Connection refused
Check if your SAP is running .In next step check if you are in same network where your SAP system running currently.If yes then first try to access this server in from your desktop start->run & give the command sapgui <your IP> instance no.
If you are able to get login page by this then you have to check the parameters in GUI which you are providing.Hope this will answer your question.