I have one Server Mac OSX and have 5 windows PC's in my team.
So I have this program on the MAC but I want two users in my team to be able to use this program, is there any way more than one person can VNC or remote desktop or something to the MAC server? Then those two users could both use the program on the mac server.
I would need two legal licenses, I guess.
Multiple simultaneous GUI sessions are possible using a third-party VNC server. This page describes the procedure for Vine Server (OSXvnc). Although it mentions Tiger, these steps work on Leopard as well. As for the clients, Leopard's built in "Screen Sharing" is based on VNC, but it cannot connect to third-party servers. You will need separate client software as well (e.g. Chicken of the VNC)
No you can't.
"our Aqua Connect Terminal Server product. It is not currently available, but you can fill out this form to be notified when it is ready."
It is their Mac Remote Desktop software that is in a beta. Aqua Connect Terminal Server is available and has been for a few years now.