Selected Answer
Leopard, not sure I fully understand what you're trying to do but guess you want to highlight rows (in columns A to F) based on a search value in cell J3 (and possibly matching customers in column C).
You don't need a macro to do that- it can be done by conditional formatting- see the attached (no-macro) version of your file. If you change the value in J3, the row highlighting will change to suit to the appropriate matching row. Note that it your data table has two or more rows with a matching value in column C, they will appear green.
It works because I've set the conditional formatting in cells A2:F8 to have a green fill based uf this formula is true (for C2 and likewise for other cells in C) :
=IF($C2=$J$3,1)
That IF statement returns a 1 (=Boolean True) when the value if C2 matches matches that in the (fixed) search cell $J$3.
Note that the formula was written in row 2 with only 1 $ sign (to fix the column C but not the row number)- that means when it's extended to other rows, the 2 changes to 3, 4, 5 or whatever so those cells get compared with the fixed $J$3.
If that doesn't suit, I suggest you edit your question to show what simple steps you want to do with which data. Also please state which library is used with your macro (it didn't work for me).