Empty input tab in the Operations Editor


I am not able to see any fields in the input tab in the operation editor, when i try to configure my resource operation. The parameter tab displays the properties that i have declared in my resource operation template class. But the input tab remains empty. As a result i can not do any mapping in my integration component flow diagram.
Can anybody please help me out with this?

I have installed webMethods Enterprise server5.01, Enterprise integrator 4.5.2, adapter configuration tool 4.1.1
I am running windows 2000 (SP2) ona pentium4 machine.
Dipesh Mehta