the following connection string is returning an error:

connStr = "User=SYSDBA;
Password=masterkey;
Database=c:/photography/databaase/c#/rak-photography;
DataSource=rak;
SystemType=1;";

i have a System DSN defined as 'rak' with the Firebird/InterBase(r) Driver

below is the error. what am i doing wrong???
thanks,
bob k.
-----------
FirebirdSql.Data.FirebirdClient.FbException was unhandled
Message="Unable to complete network request to host \"rak\"."
Source="FirebirdSql.Data.FirebirdClient"
ErrorCode=-2147467259
StackTrace:
at FirebirdSql.Data.FirebirdClient.FbConnectionInternal.Connect()
at FirebirdSql.Data.FirebirdClient.FbConnectionPool.Create()
at FirebirdSql.Data.FirebirdClient.FbConnectionPool.CheckOut()
at FirebirdSql.Data.FirebirdClient.FbConnection.Open()
at rak_photography.FormMain..ctor() in
C:\Photography\Software\rak-photography\rak-photography\rak-photography\FormMain.cs:line
40
at rak_photography.Program.Main() in
C:\Photography\Software\rak-photography\rak-photography\rak-photography\Program.cs:line
17
at System.AppDomain._nExecuteAssembly(Assembly assembly,
String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile,
Evidence assemblySecurity, String[] args)
at
Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: FirebirdSql.Data.Common.IscException
Message="Exception of type
'FirebirdSql.Data.Common.IscException' was thrown."
Source="FirebirdSql.Data.FirebirdClient"
ErrorCode=335544721
IsWarning=false
StackTrace:
at
FirebirdSql.Data.Client.Gds.GdsConnection.Connect(String dataSource,
Int32 port, Int32 packetSize, Charset charset)
at
FirebirdSql.Data.Client.Gds.GdsDatabase.Attach(DatabaseParameterBuffer
dpb, String dataSource, Int32 port, String database)
at
FirebirdSql.Data.FirebirdClient.FbConnectionInternal.Connect()
InnerException: