You don't need 2 WoW's, however you do need 2 accounts. Log on to your account on worldofwarcraft.com and send yourself a friend invite for a 10 day trial (so you can try things out).

As far as keyclone, no there is no trial... thats just how it is. There are free solutions out there like AHK, that take a little more self "programming" of the scripts. Check out the software forum.