Can we Integrate knime and excel

I am devloping predictive model using knime. Is ther any way to integrate knime and excel work sheet so that i can evoke knime predictive capability using excel keeping knime exection node in hidden background. Please let me know if any one of done similar thing in past…
If So please let me know how we can do this…
Thanks in Advance
Nikesh Srivastsva
Knime User