Java EE (Java Enterprise Edition) General Discussion

Hi !
Need to know if JMS can be used instead of webservices.
My requirement is that i have 2 applications which have to contact each other over internet. I also don't need synchronous communication. One application is in java/jsp and other is in ASP/com.
Earlier i was planning to use webservices (xml/http) for communication among them.
Can i use JMS instead of Web Services ? Also, i have to use weblogic application server, so is MOM/JMS service provided in weblogic sufficient enough for full fledge use and can be used for communication between java and no-java clients over internet or do i need to use some other MOM service.
If anyone can provide me info on
1. If JMS can be an alternative to web service
2. How exactly JMS works over ineternet
3. If anyone has worked on weblogic JMS and prove me inputs on it