[bigmattyh]

We'll do this like a choose-your-own-adventure.

#1: What are you trying to accomplish?
If you want to insert ", at" into the "You last visited" line on your index home page, go to #2!
If you want to insert ", at" into other dates -- not just the "You last visited" line, go to #3!

#2: You want to insert ", at" into the "You last visited" line on your index home page. Simple. Just do this. If that fails, re-read the instructions on how to do this. There's a link in the first post of this thread.

#3: You want to insert ", at" into other dates -- not just the "You last visited" line. Then you'll have to learn more. Start by reading through the posts to this thread. For some date conversions, yes, it's necessary to hack the code, but for many of them, you'll have to change your templates, which is very easy to do.

In any case, you need to read through the posts of this thread, because your issue has been brought up about half a dozen times before, and answered. I have faith that you'll be able to figure out not only how this hack works but how to fix it, too. If you still need help after you've read all the posts and you've looked at the code and tried to figure it out, I will be happy to help you further.