add a.b.c nav menu in specific forum

[Chadi]

I'd like to add an abc navigation menu in my Scriptural Answers forum. That particular forum is sorted alphabetically by title. Now, to make it easier to browser, I'd like to add a menu on top of that forum from A-Z (links obviously), each alphabet link showing the result of that forum's thread titles that begin with that specific letter.

I'd appreciate any help on how to go about doing this. I already installed a mod that allows me to post html code per forum, so that part is done. On a side note, I have a sub-form too and I'd like to add the code below the sub-form category. That I do not know how to do. I also need to figure out how to create the search result based on title's first letter.