Finally I found the solution to my problem ,The source was in a zip file which I unzipped and tried but did not work even after a lot of efforts , Then I just tried running the install.exe right from the zip file and It worked.
When I try to install Websphere I get the message that "A suitable JVM could not be found.Please run the program again using the option -is:javahome<JAVA HOME DIR> I've tried doin this and even setting the JAVA_HOME in the Environment variables, but ntnhg seems to work . I've JDK1.4.2 . Any info in this regards will be appreciated. Thanks in advance.