.jar file does'nt open

Hello all this is a simple question, but it did'nt quite fit in another category. I have a class file, and I want it too be executable for people without the java development kits, but do have pluggins etc.
Here's what I did...
jar cvf batchrun.jar *.class
but when even I double click on this I cant execute it, depite windows calling it a jar executable file,
anyone know what I'm doing wrong here?

Ah, I tried the one you sent, but it failed...
I made a manifest file called mainClass.txt with these contents (including pressing enter after)
Main-Class: tictactoe
then I used the command prompt to do this..
jar cvfm classes.jar mainClass.txt *
classes.jar was the jar I wanted (which was created) and mainClass.txt was the manifest file
Sadly, the thing will still not run, and it is driving me insane!!!!
anyone have any comments......?

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It works!!
This is what I did:
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<APPLET CODE = "marketmap.client.MarketMapApplet"
ARCHIVE = "weblogic.jar"
WIDTH = "657"
HEIGHT = "382"
ALIGN = "BOTTOM"
ALT = "APPLET tag not recognized">
</XMP>
<PARAM NAME = CODE VALUE = "MyApplet" >
<PARAM NAME = "type" VALUE="application/x-java-applet;version=1.2.2">
<PARAM NAME = "scriptable" VALUE="false">
<PARAM NAME = ARCHIVE VALUE="weblogic.jar">
</APPLET>
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Anyway I figure I'd share. Thanks for the help too.
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When I click PDF file, the file does not open and installation software for creative suite automatically begin to start. Even after re-installation of creative suite 5.5, only acrobat reader dose not work and the same phenomena occurs.

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Directory of C:\JAVA\PROJECTS\DIST
10/04/2005 10:09 AM <DIR> .
10/04/2005 10:09 AM <DIR> ..
10/04/2005 10:09 AM 25,203 gift_email.jar
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C:\JAVA\PROJECTS\DIST>
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Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.2
Created-By: 1.4.2_09-b05 (Sun Microsystems Inc.)
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Jms.jar file does not exist

hi dear
can anybody help me..
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bimlesh

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