Change blogroll title in Atahualpa

On my home page, I would like to change “blogroll” to “links” and change “recent posts” to “news and commentary.” I don’t want to change the structure — just the titles — and these seem to be hard-wired. I find this strange because just about everything else is easy to change in the interface.

From searching the forums I found that you do this by editing sidebar.php. But this doesn’t work for me because I’m using the template Atahualpa and there is no sidebar.php. I’ve looked around here and it seems that the author used widgets for the sidebars. This isn’t helpful because I don’t know where to look to edit it.

I looked though the other .php files and I couldn’t find what I was looking for. I was hoping to just see the word “blogroll” somewhere and then change it in the html code. Perhaps that’s naive … but I am at a loss as to what else to do.

Any help is appreciated.