so lets say i want to have an excel file read this

lA l 2000 l
where A is in one column and 2000 is in a different column
i want excel to read the string in a, then from a list of limits i set to that string, spit out whether the value in the second column exceeds that value in a third column or another window
how can i do that/ what commands are necessary?
any help would be appreciated