Yes you can deploy web servcies within JBoss. In fact, version 3.2 bundled with Tomcat comes with support with AXIS web services. I ahve used RPC web services to be handled with stateless session EJBs. Obviously, the EJBs can be clustered. Hope this was of help.
-Ahmad<br />Sun Certified Java Developer (SCJD)<br />Sun Certified Java Programmer (SCJP)<p>"You got to be careful if you don't know where you're going, because you might not get there." -Yogi Berra