You might also what to try out Alibre
http://www.alibre.com/xpress/softwar...ign-xpress.asp
Also if you are going to do house signs and things of such Vcarve might be better for you
http://www.vectric.com
If you need just a 2d cad program I have free2design and like it and have also used cadstd.
All of these are free except for vectric but its also more of a cam than a cad.