Microsoft SQL Server ODBC Driver 1.0 for Linux problem

Question

Hello! I've RedHat Linux 6 Update 1 x64 on VMware Player and MS SQL Server on real machine. My application "servernew" on RedHat. All right, but when i try connect my SQL Server:
retcode = SQLDriverConnect(hdbc,NULL,string,sizeof(string),buf,sizeof(buf),&StringLength2,SQL_DRIVER_NOPROMPT);
i get retocde = -1;
Using SQLGetDiagRec:
MessageText = Data source name not found, and no default driver specified
To make my connection i use next attempts for connection string:
//char constring[200]="Driver={Microsoft Server ODBC Driver 1.0 for Linux};Server=ARTPK2\\SQLEXPRESS2;Database=Kurs;Uid=sa;Pwd=2ef5Fese";
//char constring[200]="Driver={SQL Server Native Client 11.0};Server=ARTPK2\\SQLEXPRESS2;Database=Kurs;Uid=sa;Pwd=2ef5Fese";
//char constring[200]="Driver={Microsoft SQL Server ODBC Driver V1.0 for Linux};Server=ARTPK2\\SQLEXPRESS2;Database=Kurs;Uid=sa;Pwd=2ef5Fese";
//char constring[200]="Driver={/opt/microsoft/sqlncli/lib64/libsqlncli-11.0.so.1790.0};Server=ARTPK2\\SQLEXPRESS2;Database=Kurs;Uid=sa;Pwd=2ef5Fese";
char constring[200]="DSN={SQL Server Native Client 11.0};Uid=sa;Pwd=2ef5Fese";
but...Data source name not found, and no default driver specified .. help me

Answer 1

Ok. New attempts with sqlcmd:
[root@localhost ~]# sqlcmd -S 192.168.0.3 -U sa -P 2ef5Fese -d first
SqlState HYT00, Login timeout expired
A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information
see SQL Server Books Online.
TCP Provider: Error code 0x6F
New error 0x6F (i turned off firewall in windows).
[root@localhost ~]# sqlcmd -S ARTPK2\\SQLEXPRESS2 -U sa -P 2ef5Fese -d first
SqlState HYT00, Login timeout expired
A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information
see SQL Server Books Online.
SQL Server Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF].
It's bad way, but...
[root@localhost ~]# sqlcmd -D -S ARTPK2\\SQLEXPRESS2 -U sa -P 2ef5Fese -d first
SqlState IM002, Data source name not found, and no default driver specified
It's like in my program!!
  retcode = SQLDriverConnect(hdbc,NULL,string,sizeof(string),buf,sizeof     (buf),&StringLength2,SQL_DRIVER_NOPROMPT);
  i get retocde = -1;
  Using SQLGetDiagRec:
  MessageText = Data source name not found, and no default driver specified
Why "SQLDriverConnect"  is looking for DNS?!