I have completed initial vpn connection setup. It has connected. I have tested with ping and it is ok. My problem is, when I want to start file transfer in VPN it asks for username & password. So what is the user name? I have tried giving Computer-Name/User-Name. I have found my Computer Name by going to Control Panel/System/ & clicking 'Computer Name' tab & username from user accounts or it is shown when I login in windows account (Please correct me if the above procedure is wrong). But what is the password? I have tried giving the account password but it always give 'The username or password is incorrect.'

My Question: How to find the username & password?

For Information: a) I have Team Viewer 7 installed in one Windows XP PC & one Windows 8 PC. I like to create a secure connection between these two PCs.

b) The two PCs are connected in the same local network via a router.

Please ask if you need additional information.