Noob Question About Query By Form

Hi all, I'm pretty new to Access, but catch on quick. I have posted this question at another access forum, but have not received any input - maybe it's in the way the question was asked.:confused:

I have a developed a database to track patient ID, patient name, then several other fields of data such as therapies recieved, medications etc. The main form is used to input the data for each record.

The point I'm at now is the switchboard. I have created a command button that when pressed will open the main form at the first blank record for data entry on a new patient.

I want to add another command button that when pressed will open a pop-up/form/text field that will allow me to input a search criteria. The two criteria I would like to use are Patient ID or Patient Name. When the search criteria is entered, I would then like for the main form to appear at the record specified by the criteria for record editing.

Clear as mud? I'm pretty sure there's a fairly easy way to go about accomplishing this task, but I'm clueless. I have tried a couple of different routes, but wanted input from you guys about what would be the easiest way to address this.

Thanks in advance.
Frank