Thanks Tom. This is exactly what I was looking for. I guess I have to dig out my 'Masteing Regular Expressions' book and figure out exactly what the heck a negative look-behind assertion really is and then I'll be on my way to becoming a guru!

At the top of your post you said that basic pattern matching is not the best way to go about this (although it has eductaed me, which was my real intent here). What would be the best approach in your opinion?

Thanks for the help!!!