I was testing and debugging the program during the week. I added more functions to it as well.
I tested other options too. I was advised to add either a bash or shell program, which gathers CPU and memory utilization of each node in our cluster and transfers them to the master node. I then should place these data into a text file and read the file through the VB program, or finish the job with the help of sockets.
The reason is that our cluster nodes are in a private network in order to maintain the best security possible. This makes accessing information from each node through common functions such as rlogin, telnet or ping, impossible.