Excel is vertical-centric (Okay, I made this word up)
Don't believe me? The user interface is mostly at the top or bottom - Main menu at the top, Autofilter at the top, Name Box and Formula Bar at the top, Status Bar at the bottom, Sheet tabs at the bottom...why is it so? I guess the reason is that it is a lot easier to work "vertically" than "horizontally", even mouse wheels are designed to work this way.
Which leads to a problem with rows. Looking at several rows with data, it's easy to lose track of which row you are supposed to be looking at. So here are a few tips to make life easier.
1. Increase the row heightIf this does not interfere with how your files are set up, changing row heights to somewhere between 18 and 24 points will help reduce eyestrain.
Before (14.25 points)

After (18.00 points)

Easier to see with just a minor change in row height.
2. Row ShadingChanging the color of every other row helps too. You can just change the Fill color, or use Conditional Formatting. (This has the advantage of chaning the row color if you decide to insert more rows later on)
Here's a
link to one of my old posts.
My preferred formats are
or
mainly because they are simple to remember...
The difference?

Getting better again.
3. Automatic row highlightThis is some code I wrote a week or so ago. Place it in the appropiate sheet module and change the top left cell and bottom right cell of your range to suit where indicated.
Like my previous Data Validation code, it assumes that there is a Forms Toolbar checkbox in Cell A1 (Turn it the checkbox on and off to stop the code from running, it tends to interfere with Undo)
Here's some code to quickly insert a Checkbox.
Sub AddCheckbox()
On Error Resume Next
ActiveSheet.CheckBoxes.Add(0, 0, 0, 0).Select
With Selection
.Characters.Text = ""
.Value = xlOn
.LinkedCell = "A1"
End With
Range("A1").Select
Selection.Font.ColorIndex = 2
End Sub
With the Checkbox turned on, you are ready to go. Select any cell within the range and the row is highlighted accordingly.
Here's a pic.

I've also been working on a new version of my
Cell Spotter to work in a similar way. Just now I'm testing it at work, I'll upload it when it's ready :-)