How to access database other computer in LAN?

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http://www.daniweb.com – hello i'm newbie here. i'm finish to develop a registration system using vb 2008 exp edition. so, i want to connect my standalone system with LAN network. i want to access database from other computer and be use in my system. i'm use crosscable to connect with 2 computer. before this, i'm just change connection string: 'server = ip address of second computer but it's didn't work. anyone help me? connectionstring = "server=localhost; user id=root;password=123456;database=vrs;" thank you for your help (General)