JRE problem in JWS

[Abhi J]

I have JWS 2.0 which contains JRE 1.1.7. I downloaded JRE version 1.2.2 to use instead of the 1.1.7, but when I replace the folder, the JWS server gives me an error while starting -
Program c:\JavaWeb~1.0\bin\..\jre\bin\jre.exe exited with code -1073741819
c:\JavaWeb~1.0\bin\..\bin\jserv.exe
c:\JavaWeb~1.0\bin\..\bin\jserv.exe
jserv: Shutting down the server
Also, I cannot start JWS server from the DOS prompt using -javahome option as I get an error -

Can't read file 'c:\JavaWebServer2.0\bin\..\keys'.
Provider did not return PKCS8Key
Program c:\JDK12~1.2\bin\java.exe exited with code 1
c:\JavaWeb~1.0\bin\..\bin\jserv.exe
c:\JavaWeb~1.0\bin\..\bin\jserv.exe

Can anyone tell me how to rectify this? Or how do I use jdk's jre?

[tim go]

Have you had any feedback on that problem because I'm having the same one.
I tried a bunch of things, but I can't get java.exe to work properly.