How to check if a process exists in another computer?

See more:

VB

I have created a small application (gateway application) to read messages from a database and sends them via an SMS gateway. I also have a main application which saves the messages to the database so the gateway application can retrieve and send them. The main application has to check for every 10 seconds whether the gateway application is running. If it's running the SMS messages will be saved to the database. Otherwise it does not. The gateway application is in another computer. I need to program the main application to check if the gateway application is running every 10 seconds. How is it possible?

I use vb.net