Hey Ed, what is the number on the headstock? Is it RG-170?

If it is 170 you can buy this guitar from ebay and use the neck of it to place it on your guitar.
Who knows, you may even like that guitar better than the one you are trying to fix.

http://cgi.ebay.com/Ibanez-RG-170-Electric-Guitar-Midnight-Gloss-Black_W0QQitemZ110267532130QQihZ001QQcategoryZ33043QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

I know that other RG have a rosewood fretboard with “U” shaped neck. But those have sharktooth inlays and yours have dots.
That is why I think yours is a RG-170 or a similar model.

Anyway, good luck to you, man.