Gotomypc is not a file sharing program. Gotomypc let you operate your computer from a different location. You could log in to your work computer from home and your screen at home will show your work computer. Gotomypc will run any program on the computer that you are connecting to just slower because it running on internet connection. You do not use Gotomypc to share filemaker or any software. You will need filemaker or filemaker server depending on the number of concurrect users.
Gotomypc is similar to PcAnywhere or real old pc software Carbon Copy.
Here is a link to Gotomypc on How it works .http://www.gotomypc.com/remote_access/pc_remote_access