Before you do that you may want to look at some of the other VTTs that are out there. Most if not all allow you to use it FtF as well so that it basically just replaces the crystal map/scratch paper that we have all used for many years.
Many VTTs are free, and offer essentially the same capabilities as WotC's. Perhaps even better than WotC's in many respects. I won't name specific ones as a cursory search through these forums will tell you which one I use, but instead I'll give you the link to a very nicely done page of links to all the various VTTs that are out there:
http://www.battlegroundsgames.com/links.html