Using the run.bat file works fine, it runs java (1.4.2_05)
Trying to configure JBoss (4.0.1RC1) to start from eclipse it seems to use javaw and gives this error:
Failed to boot JBoss:
I suspect this is a configuration error, as I already hit, but overcame classnotfound exceptions, but I can't find any documentation on how to configure the JBoss server.
I have the same configuration and have had no problems like you describe. I followed the documentaiton on the wiki pages :http://www.jboss.org/wiki/Wiki.jsp?page=JBossIDE including the installation tutorial and the user tutorial.