Yea they still count. Essentially here's the quick break down. Taking the pre-reqs gets you into the application game (ie: you can now submit an application). Recommend you take new coursework such as upper division science classes to show the admissions committees that you are still up to speed with going to school, learning, etc. This also helps you refresh your schools to prepare for the MCAT, and potentially interact with professors so you can get new letters of recommendation.
Prolly first thing to consider, do you want to do a official or unofficial post-bacc program? There are plenty of people who decided to change careers, and there are post-bacc programs that help you through that. Some programs even link you into a med school. Depending on your undergrad GPA, you may look into such programs, however these are obviously more competative to get into.
An unofficial program isn't bad either. Eitherway just do well, and you will get into med school. Since you were a nurse, clinical experience is obviously not a problem. You may want to put some "icing on the cake" by doing some additional volunteering (clinical or non-clinical), and/or perhaps research. The most important thing is to get your application up to speed, and that is mainly taking classes for the reasons I stated early. I think the challenge for you is not getting into med school, but getting back into the school arena. For some that is always hard, but once you get into the mode, everything is good 🙂 Goodluck!