Is there any way to create a script or macro to "find" a number from column A that is in column B, then select it that row? Then it willl repeat that process with the next number in column A until the end.

Example:
A B
-------------------------------------
1 3 <------------[
2 5 <------------[
3 10 [---- rows slected after running the macro
4 20 [
5 1 <------------[
6 9

Let me know if you need any more info. THANKS