Good deal!
A recent discussion on the use of regular expressions that might be worth a minute or two of your time.
These are my most relevant posts, but you might look over the whole thread.
RegEx question: how to search for white space repetitions (1 tab and 1 new line) - #8 by ccstone
RegEx question: how to search for white space repetitions (1 tab and 1 new line) - #15 by ccstone
-Chris