You can easily do this with any of the finale products.
Finale Notepad is still free I believe (it's like a teaser program, but it is very functional). The only drawback is that unless you purchase PrintMusic or "better", you will not be able to scan the sheet music in, so it takes a little longer to enter notes.
http://www.finalemusic.com
It does work both ways however:
Music Notation--->TAB ...or
TAB--->Music Notation
Make a new sheet, put on there the music notation staff that you want (presumably the guitar part), and also another guitar, but put it in TAB format. Just use copy and paste to "convert"
Or better yet, just use your brain!
