Database Access works on a manually started Tomcat but not on a Tomcat started as a Service

[mocca mixer]

Hello JavaRanch People :-)

My problem is the following - i programmed an application which accesses a ms sql server through native authentification (jdbc driver is jtds). everything works fine in my development environment (eclipse) and also directly under tomcat - at least if i start up manually (of course i had to put the native dll file for single sign on in a directory where my java library path points to). BUT (!!!) it doesn't work if i start tomcat as a service!

I already found out where my library path is by adding

		String libPath = System.getProperty("java.library.path");
		log.log(Level.INFO, libPath);

to my application which returns:

INFO:
C:\Program Files\apache-tomcat-6.0.26\bin;
.;
C:\Windows\Sun\Java\bin;
C:\Windows\system32;
C:\Windows;C:\Windows\system32;
C:\Windows;
C:\Windows\System32\Wbem;
C:\Windows\System32\WindowsPowerShell\v1.0\;
c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;
c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;
c:\Program Files\Microsoft SQL Server\100\Tools\Binn\;
c:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;

I already tried putting the .dll file ("ntlmauth.dll" shipped with the jdbc driver) in some of that places, but the application always throws the following exception:

    
...
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (I/O Error: SSO Failed: Native SSPI library not loaded. Check the java.library.path system property.)
	at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1549)
	at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1388)
	at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
	at alpenergy.vps.e4u.database.impl.DatabaseImpl.persistToTable(DatabaseImpl.java:40)
	... 5 more
Caused by: java.sql.SQLException: I/O Error: SSO Failed: Native SSPI library not loaded. Check the java.library.path system property.
	at net.sourceforge.jtds.jdbc.TdsCore.login(TdsCore.java:615)
	at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java:345)
	at net.sourceforge.jtds.jdbc.ConnectionJDBC3.<init>(ConnectionJDBC3.java:50)
	at net.sourceforge.jtds.jdbc.Driver.connect(Driver.java:184)
	at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
	at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:582)
	at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1556)
	at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1545)
	... 8 more
Caused by: java.io.IOException: SSO Failed: Native SSPI library not loaded. Check the java.library.path system property.
	at net.sourceforge.jtds.jdbc.TdsCore.sendMSLoginPkt(TdsCore.java:1893)
	at net.sourceforge.jtds.jdbc.TdsCore.login(TdsCore.java:588)
	... 15 more

... which means that the native library for using that driver was not found (SSO = Single Sign On -> needs "ntlmauth.dll" shipped with the jdbc driver). As I said: it works in eclipse or if I start tomcat manually, but it doesn't work if I start tomcat as a service. I also tried starting it as admin... any suggestions? I am sure more ppl are getting this error...

Thanks in advance for any useful tips! :-)