Ahem: http://blue.bikeshed.com/There's no need for everyone to jump in and start offering solutions to a simple problem. There's lots of different ways to solve it. People have different opinions on what is the best way. But irregardless, I'm pretty sure the GP knows how to do it now.
-Tyler
... except if the offered solutions are wrong, or there is a better way that people might be interested in, or people just want to have a discussion in a place where they can talk about whatever they want to.
The replace(..., "\t") solutions insert tabs, not replace tabs with spaces. So they're not good.