I can successfully create a PAK file of my own format. At first, tested it with ASCII files to make sure it was doing what I wanted. Late this evening, I was able to put the required data into vectors and then for the binary data I was just able to grab the total size of the file place them in a short * buffer - then write it in the pack file.
I have the creation part down now, I have to move forward with the loading content part. However, thanks go out to Hodgman for his advice!