Hi Bernie,
When you say:

"In another worksheet I have a table with 10 rows and 4 columns. Column A
has values 1 thru 10, column B values 11 thru 20. column C is the result of
"calling" WS with the values A and B of the same row, and should receive the
B1 value of WS. column D again calls WS, but displays the B2 value."

I'm not sure what you mean. Could you give an example of the formulas you
are currently using in Column C?

Regards - Dave.