Put form labels left of the fields?
As when it comes to theming stuff, you should always ask your self: Can I do this with CSS? The answer in this case is yes.

label { float: left padding-right: 3px; } 

Example

OR (probably best to go with)

label { display: inline }
input { display: inline }


Example 2

You will need to add the css code to your administration theme .css file.