Change of Client in portal

Hi All,

We have installed java+abap . Now EP users have been created on Abap stack and default client is 001 .

So again they have created or copied on client 100 . So these users are also present in Portal .\

But we are unable to login with these users as I think the default client for portal is 001 . Now how we can change or where we can change the client in portal . so that we can login with the user ids.

IS there any settings needed in portal , please let me know .

Regards,

Surya