Also you might want to start take a look at http://www.dual-boxing.com/wiki/index.php/Main_Page

the very first section is the FAQ section which contains links to guides , guide to guides and Faq for Non-multiboxers.

the guide to guides I strongly recommend, Vyndree went to a lot of effort with that one to make the new boxer's life (and old timer's tempers) as easy as possible

Unfortunately, as with most niche communities, your experience here will be largely determined by you. The more you put into this hobby, the more you will get out and the more people will willing to help. Due to the huge amount of effort people have taken to document things don't expect to be lead through the process by the hand, most members here will expect you to have researched first, both on these forums and the wiki or the various blogs.

I hope you like tinkering because it is rare for a multiboxer to ever be finished with their interface