I know the username and password for my computer connection, but i don't know the server address and the other stuff.

Here is what i do :

I go to the menu (on my phone) and choose the settings, i go to connectivity then to synchronization. After, i press on New Account. I write the username for my computer and then these things apear :
Server Address, username, password, connection,applications, App. settings, sync. interval, remote initiation, and remote security. I don't know what to write in them. Can someone please help?
It would be easier if someone has the same phone so they know what i'm talking about.
Thanks!
Can it have Wifi in it?