Hello! I�m a working with JMS Tutorial of Jms.(J2EE 1.3.1). I follow all the steps of the tutorial, and when i write "java -Djms.properties=%J2EE_HOME%\config\jms_client.properties SimpleQueueSender MyQueue 3" The console shows me the following error: "Exception in thread "main" java.lang.NoClassDefFoundError: Files\s1studio\ee\j2s dkee1/3/1\config\jms_client/properties" I don�t know hot to fix this error. The classpath, and all the variables are correctily defined. I use XP o.s., jdkse 1.4 and j2see 1.3.1, and i repeat, i follow the steps of the tutorial. Could anyone help me? Many Thanks. Note: Sorry for my poor English.