hi please help me

i need your help please help me ,,

 

actually i have developed a windowd service in c#.net , this service retrieves data from a sql server installed on a work group on the same lan wherre my computer resides , but it gives an exception always " login failed for user sa reason cannot connect to a trusted sql server connection. " remote sql server is configured for both windows and sql server authentication and i have configured serverprocess installer for local system account with user name password = null ;

 

kindly help me

tauseef