Without a sight pusher that would work on both front and rear dovetails, I would personally not mess with it. I did a Steyr M (also two dovetails) last month, and it was a total PITA. I ended up taking the front sight to a gunsmith, I just couldn't get it to work. If you insist on doing it yourself, buy a small brass hammer and brass or nylon punches, you will mar the finish with a steel punch. Make sure to use Short, light taps, and file down any rough edges that might impede movement of the new sight in the dovetail once you get the original front sight out.
I have a MGW sight pusher for my Glock that I installed my Heinies with, and this took only 20 minutes. With the XD, I'm not sure but I know that front dovetail looks a lot like the Steyr, which was not worth the time and frustration.
Again, I personally wouldn't play around with it, as you do run the risk of screwing up the sight or the finish but checkout hs2000talk.com and try to find some posts from those who have done it.