So in keeping with the macro Visual Basic (VB) script, I'll put comments after an apostrophe (') so you can copy and past directly into your VB and still have it work.
DIM ROWS as string
ROWS = ActiveCell.ROW
Range("A1", "H" & ROWS).Select
' This macro assumes your data starts at cell "A1" and has a
'pre-determined width out to column "H"
'The variable "ROWS" is created to store a number for us
'The cursor is placed in the "A1" cell.
'The cursor travels down column "A" until the last bit of data
'is found and stops there.
'Our variable "ROWS" stores the number of the row at which it stopped.
'This is how it will know to select the correct number of rows
'and lastly, it selects everything from cell "A1" to column "H" with
'however many rows contain data according to the "ROWS" variable.
(edit: because it is illegible as is)