GeneXus - Tablas en postgre y genexus

Hola Laura:
He visto en el foro que has resuelto el problema de Java y Postgres. Pues yo aún no lo he hecho. Llego hasta la reorganizacion y me tira el sgte error:
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ompiling Reorganization...
CLASSPATH=gxclassr.zip;C:\Daniel\pg74.216.jdbc3.jar;C:\Tomcat 5.0\common\lib\servlet-api.jar;.;
callmake.bat "C:\j2sdk1.4.2_12\bin\NMAKE.EXE" "C:\j2sdk1.4.2_12\bin\javac.exe" Reorganization -O

Microsoft (R) Program Maintenance Utility Version 1.50
Copyright (c) Microsoft Corp 1988-94. All rights reserved.
Compiling GXcfg.java
Compiling gxcrtdb.java
Compiling gxrgza.java
Compiling gxrgzb.java
Compiling gxrgzc.java
Compiling Reorganization.java
Compilation Successful

Executing Reorganization...
CLASSPATH=gxclassr.zip;C:\Daniel\pg74.216.jdbc3.jar;C:\Tomcat 5.0\common\lib\servlet-api.jar;.;
C:\j2sdk1.4.2_12\bin\java.exe Reorganization
Error connecting to database at Thu Jun 29 08:14:17 ART 2006
Driver : org.postgresql.Driver
URL : jdbc:postgresql://10.0.0.3:5432/javadb
User : postgres
Error : Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Connection : null
Java classpath : gxclassr.zip;C:\Daniel\pg74.216.jdbc3.jar;C:\Tomcat 5.0\common\lib\servlet-api.jar;.;
Error connecting to database at Thu Jun 29 08:16:43 ART 2006
Driver : org.postgresql.Driver
URL : jdbc:postgresql://10.0.0.3:5432/javadb
User : postgres
Error : Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Connection : null
Java classpath : gxclassr.zip;C:\Daniel\pg74.216.jdbc3.jar;C:\Tomcat 5.0\common\lib\servlet-api.jar;.;
Error connecting to database at Thu Jun 29 08:18:10 ART 2006
Driver : org.postgresql.Driver
URL : jdbc:postgresql://10.0.0.3:5432/javadb
User : postgres
Error : Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Connection : null
Java classpath : gxclassr.zip;C:\Daniel\pg74.216.jdbc3.jar;C:\Tomcat 5.0\common\lib\servlet-api.jar;.;

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POdrias ayudarme ?
Desde ya muchas gracias ....
Daniel.-