Do you just want to seperate the data so you have 2 columns, 1 with the data to the left of the hyphen, and one with the data to the right?
I.E..
Start with
A1 = XXXXX - yyyyyy
End up with
A1 = XXXXX
B1 = yyyyy
??
Try Data - Text to Columns
Select Deliminated
Check Other and enter a hyphen