Upgrading from Atahualpa 3.4.1 to 3.7.12

Started running into an old problem with post titles, and think it's time to upgrade! So happy that there is a top center widget area now in the new version too, so I just backed up my database, and am almost ready to make the leap! Wanted to know if there was a method to make a move from this old version of Atahualpa to the latest and greatest.

I had searched through the forum, and remember seeing something in the past, but can't locate it. If you can point me on a past thread or just a fresh set of steps it would be greatly appreciated. I have a few html/css inserts, and want to make sure that transfers. Also if i should go through the theme option settings and copy what i had earlier.

Thanks in advance!!!!