scrolling in table

i have an extremely large table which is formatted in 6
point arial, legal landscape. i'm doing revisions and
have blown it up to 150% to be able to read it on the
screen. however, this means that scrolling from the end
of cell to the one below moves the cursor the first cell
in the row, necessitating a lot of scrolling. at 150
percent, of course, the column does not fit on the screen
(small monitor, can't be fixed). any suggestions? tia.