1) Two druids are very easy to dual-box. Just have to set up follow and assist and the rest is just duplicating your macros on both chars.

2) We have a large resource of documentation people here have compiled to help answer your question about free software alternatives to Keyclone. It can be found here: http://www.dual-boxing.com/wiki/index.php/Software (Sidenote: the "GM Approved" thing is largely a selling feature more than fact as most of the rest have been approved as well, just not explicitly in a nice, quotable blue post. The Software forum is also a great resource for answering your question. See the stickies in there for a wealth of good info.

GL!