How to detect a port which is open?

I have a serious problem. I am using Windows 98 and I want to know whether my port is open or closed, because I want to see my control panel with the use of a website, having online services and for that I need ports 8087 and 8088 open. I have one more computer, which runs MAC but there I can access the control panel and both the computers are connected with a wireless router.
