Problems showing german special characters using DB2 jdbc driver

Hi JDBC gurus,
In my application the special german characters(umlauts...) are not shown correctly when I'm using IBM jdbc driver(type 2). When I switch to jdbcodbc driver everything is correct. So is there any trick, some connection parameter, some property or something like this? Something like "setCharset" or "umlauts" or something? I could not find anything in web :-(
It is also hard to imagine that nobody has faced this problem. Or it is very trivial...
The second problem:
I have downloaded a new driver (com.ibm.db2.jcc.DB2Driver) but when I try to connect with DB I'm getting
com.ibm.db2.jcc.b.SqlException: No license present. What does it mean - no license? I'm going to clear with our DB admin if the reason can be that I have no rights to connect directly with DB without having client installed locally on my PC. This is only what comes to my mind.
Environment:
DB: DB2 7.x
Web-Server: Tomcat 5.x
Hibernate 3.1.x

Actually the problem is ONLY symbol � - scharfes S. Other umlauts are shown correctly...
What is wrong with that symbol????
Many thanks in advance,
Giorgi

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