I recently found a tutorial on changing a sims' gender. In order to do this, you need to change property set AND age data. I open my sims' character file, and there is no 'age data' displayed. How do I get it?

My sim recently graduated from college, if this helps...

This is obviously a really really late response and I doubt you are still searching for an answer. But I've found a solution and maybe it will help someone else who may be looking for one.

If you cannot find Age Data under a sims Character File, you need to open the sims OTHER Character File.

Most of them come with two [the other with a .1 at the end] For example, File one: U012_user00273 File two: U012_user00273.1

You need to open the one WITHOUT the .1 To do this, click start, and type the sims filename in search. Then, click on the file with no .1 at the end. It should open in SimPE and you should be able to see Age Data on it.

If you can't find a sims file name, find the sim on SimPE and it is listed in Plugin View under More.