How to Remove the Deadlock from the SQL SERVER.

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IIS7

ASP.NET

SQL-Server

IIS

, +

In my ERP the deadlock occurs, so many times , due to which my 200 employes in my company was not able to do their work. I am 1.3 yr Dot Net Developer, i dont have so much knowledge about the SERVER and these problem but through Google i found some solution, but still i cant get any success.
i try this query to find how many deadlock in my database..

SELECT cntr_value AS NumOfDeadLocks
  FROM sys.dm_os_performance_counters
 WHERE object_name = 'SQLServer:Locks'
   AND counter_name = 'Number of Deadlocks/sec'
   AND instance_name = '_Total'

and the O/P is 350 deadlock in my database.

so plz tell me some solution.its very urgently frnd.