Excel 2003

I have sheet (in second TAB, named "Tickets". 300 lines total
there are 3 lines of labels
there are 295 lines of data (cols A - AP)
There are two line of summary
300 total lines
Also sheet is locked/protected for col C and cols AK-AP

I want the user to be able to "click and pick" one of the values in
col A, rows 4 thru 297
taking her to that line so she can update values in cols F-AJ. I
have tried Validation and
filters, but can't get it to work.

Is there a VB routine that I can use to unlock spreadsheet, set up
list validation on row 4 thur 297 (col A as target), allow data entry
in col F-AJ, then relock the sheet ?

Thanks for any help/direction,,,,,,

Tom Rector