Windows Service Database problem

[Taduri]

Hi,

I am creating a windows service that will process exe file( Developed in VB and connects to database using DSN and sa/master login).
When service process exe I am getting Database (Sql Server 2005) error "login failed to user sa.."

Code I am using:

Process p;
string FilePath = @"C:\vb_file.exe "; // vb_file connects to DB Sql Server 2005
string arg = " /send";
p = Process.Start(FilePath, arg);

Error I am getting...

The VB Application identified by the event source logged this Application vb_file: Thread ID: 5748 ,Logged:
vb_file Rev. 30-Apr-03T /send /RESTART

vb_file Rev. 30-Apr-03T /send /RESTART
Error 40002 in SQL.InputConnect: 28000: [Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user 'sa'. [Aborted]


Please help...

Thanks
Taduri