Srinivas,
An existing profile is required to configure the Websphere connector runtime. MyEclipse does not create a new profile when you import the CAR file. It will only update the existing profile configuration. You should create a new profile, configure the Websphere connector and then apply the .car file.
You can export the .car file to the local file system (Export > General > File System) and import the .car from the file system to another workspace (Import > General > File System).
Let us know if you have further questions.